Refactoring HOS folder structure (#771)

* Refactoring HOS folder structure

Refactoring HOS folder structure:

- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close #766 and #753).

* Remove Types namespaces

14 files changed, 132 insertions, 110 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Friend/IFriendServiceTypes.cs b/Ryujinx.HLE/HOS/Services/Friend/IFriendServiceTypes.cs
deleted file mode 100644
index 5a5238f5..00000000
--- a/Ryujinx.HLE/HOS/Services/Friend/IFriendServiceTypes.cs
+++ /dev/null
@@ -1,104 +0,0 @@
-using Ryujinx.HLE.Utilities;
-using System.Runtime.InteropServices;
-
-namespace Ryujinx.HLE.HOS.Services.Friend
-{
-    enum PresenceStatusFilter : uint
-    {
-        None,
-        Online,
-        OnlinePlay,
-        OnlineOrOnlinePlay
-    }
-
-    enum PresenceStatus : uint
-    {
-        Offline,
-        Online,
-        OnlinePlay,
-    }
-
-    [StructLayout(LayoutKind.Sequential)]
-    struct FriendFilter
-    {
-        public PresenceStatusFilter PresenceStatus;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsFavoriteOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsSameAppPresenceOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsSameAppPlayedOnly;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsArbitraryAppPlayedOnly;
-
-        public long PresenceGroupId;
-    }
-
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8, CharSet = CharSet.Ansi)]
-    struct UserPresence
-    {
-        public UInt128        UserId;
-        public long           LastTimeOnlineTimestamp;
-        public PresenceStatus Status;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool SamePresenceGroupApplication;
-
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x3)]
-        char[] Unknown;
-
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0xC0)]
-        public char[] AppKeyValueStorage;
-
-        public override string ToString()
-        {
-            return $"UserPresence {{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status}, AppKeyValueStorage: {AppKeyValueStorage} }}";
-        }
-    }
-
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8, Size = 0x200, CharSet = CharSet.Ansi)]
-    struct Friend
-    {
-        public UInt128 UserId;
-        public long    NetworkUserId;
-
-        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x21)]
-        public string Nickname;
-
-        public UserPresence presence;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsFavourite;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsNew;
-
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x6)]
-        char[] Unknown;
-
-        [MarshalAs(UnmanagedType.I1)]
-        public bool IsValid;
-    }
-
-    enum NotificationEventType : uint
-    {
-        Invalid          = 0x0,
-        FriendListUpdate = 0x1,
-        NewFriendRequest = 0x65,
-    }
-
-    [StructLayout(LayoutKind.Sequential, Pack = 0x8, Size = 0x10)]
-    struct NotificationInfo
-    {
-        public NotificationEventType Type;
-
-        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x4)]
-        char[] Padding;
-
-        public long NetworkUserIdPlaceholder;
-    }
-}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs b/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
index c907a2ed..cec3c422 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
@@ -1,4 +1,5 @@
 using Ryujinx.Common;
+using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator;
 using Ryujinx.HLE.Utilities;
 
 namespace Ryujinx.HLE.HOS.Services.Friend
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/Friend.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/Friend.cs
new file mode 100644
index 00000000..4947a5ce
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/Friend.cs
@@ -0,0 +1,29 @@
+using Ryujinx.HLE.Utilities;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 0x8, Size = 0x200, CharSet = CharSet.Ansi)]
+    struct Friend
+    {
+        public UInt128 UserId;
+        public long    NetworkUserId;
+
+        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 0x21)]
+        public string Nickname;
+
+        public UserPresence presence;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsFavourite;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsNew;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x6)]
+        char[] Unknown;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsValid;
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/FriendFilter.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/FriendFilter.cs
new file mode 100644
index 00000000..261bf7bf
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/FriendFilter.cs
@@ -0,0 +1,24 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+{
+    [StructLayout(LayoutKind.Sequential)]
+    struct FriendFilter
+    {
+        public PresenceStatusFilter PresenceStatus;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsFavoriteOnly;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsSameAppPresenceOnly;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsSameAppPlayedOnly;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool IsArbitraryAppPlayedOnly;
+
+        public long PresenceGroupId;
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatus.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatus.cs
new file mode 100644
index 00000000..df2e6525
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatus.cs
@@ -0,0 +1,9 @@
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+{
+    enum PresenceStatus : uint
+    {
+        Offline,
+        Online,
+        OnlinePlay
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatusFilter.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatusFilter.cs
new file mode 100644
index 00000000..24da7fd3
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/PresenceStatusFilter.cs
@@ -0,0 +1,10 @@
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+{
+    enum PresenceStatusFilter : uint
+    {
+        None,
+        Online,
+        OnlinePlay,
+        OnlineOrOnlinePlay
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs
new file mode 100644
index 00000000..5fe8bfd7
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/FriendService/Types/UserPresence.cs
@@ -0,0 +1,27 @@
+using Ryujinx.HLE.Utilities;
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 0x8, CharSet = CharSet.Ansi)]
+    struct UserPresence
+    {
+        public UInt128        UserId;
+        public long           LastTimeOnlineTimestamp;
+        public PresenceStatus Status;
+
+        [MarshalAs(UnmanagedType.I1)]
+        public bool SamePresenceGroupApplication;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x3)]
+        public char[] Unknown;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0xC0)]
+        public char[] AppKeyValueStorage;
+
+        public override string ToString()
+        {
+            return $"UserPresence {{ UserId: {UserId}, LastTimeOnlineTimestamp: {LastTimeOnlineTimestamp}, Status: {Status}, AppKeyValueStorage: {AppKeyValueStorage} }}";
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/IDaemonSuspendSessionService.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IDaemonSuspendSessionService.cs
index 0156e0b7..42b34312 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/IDaemonSuspendSessionService.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IDaemonSuspendSessionService.cs
@@ -1,4 +1,4 @@
-namespace Ryujinx.HLE.HOS.Services.Friend
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
 {
     class IDaemonSuspendSessionService : IpcService
     {
diff --git a/Ryujinx.HLE/HOS/Services/Friend/IFriendService.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IFriendService.cs
index ed3bc284..7492c5a7 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/IFriendService.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/IFriendService.cs
@@ -1,11 +1,12 @@
 using Ryujinx.Common;
 using Ryujinx.Common.Logging;
-using Ryujinx.HLE.HOS.SystemState;
+using Ryujinx.HLE.HOS.Services.Account.Acc;
+using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.FriendService;
 using Ryujinx.HLE.Utilities;
 using System.IO;
 using System.Runtime.InteropServices;
 
-namespace Ryujinx.HLE.HOS.Services.Friend
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
 {
     class IFriendService : IpcService
     {
diff --git a/Ryujinx.HLE/HOS/Services/Friend/INotificationService.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/INotificationService.cs
index 7cff84bd..1ff37442 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/INotificationService.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/INotificationService.cs
@@ -2,11 +2,12 @@ using Ryujinx.Common;
 using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel.Common;
 using Ryujinx.HLE.HOS.Kernel.Threading;
+using Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService;
 using Ryujinx.HLE.Utilities;
 using System;
 using System.Collections.Generic;
 
-namespace Ryujinx.HLE.HOS.Services.Friend
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
 {
     class INotificationService : IpcService, IDisposable
     {
diff --git a/Ryujinx.HLE/HOS/Services/Friend/NotificationEventHandler.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/NotificationEventHandler.cs
index 8582a074..19b15416 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/NotificationEventHandler.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/NotificationEventHandler.cs
@@ -1,6 +1,6 @@
 using Ryujinx.HLE.Utilities;
 
-namespace Ryujinx.HLE.HOS.Services.Friend
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
 {
     public sealed class NotificationEventHandler
     {
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationEventType.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationEventType.cs
new file mode 100644
index 00000000..5136ae8a
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationEventType.cs
@@ -0,0 +1,9 @@
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
+{
+    enum NotificationEventType : uint
+    {
+        Invalid          = 0x0,
+        FriendListUpdate = 0x1,
+        NewFriendRequest = 0x65
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationInfo.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationInfo.cs
new file mode 100644
index 00000000..1bd6f011
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/NotificationService/Types/NotificationInfo.cs
@@ -0,0 +1,15 @@
+using System.Runtime.InteropServices;
+
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator.NotificationService
+{
+    [StructLayout(LayoutKind.Sequential, Pack = 0x8, Size = 0x10)]
+    struct NotificationInfo
+    {
+        public NotificationEventType Type;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 0x4)]
+        public char[] Padding;
+
+        public long NetworkUserIdPlaceholder;
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/FriendServicePermissionLevel.cs b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/Types/FriendServicePermissionLevel.cs
index a2a4031a..9c811365 100644
--- a/Ryujinx.HLE/HOS/Services/Friend/FriendServicePermissionLevel.cs
+++ b/Ryujinx.HLE/HOS/Services/Friend/ServiceCreator/Types/FriendServicePermissionLevel.cs
@@ -1,6 +1,6 @@
 using System;
 
-namespace Ryujinx.HLE.HOS.Services.Friend
+namespace Ryujinx.HLE.HOS.Services.Friend.ServiceCreator
 {
     [Flags]
     enum FriendServicePermissionLevel