Code style fixes and nits on the HLE project (#355)

* Some style fixes and nits on ITimeZoneService

* Remove some unneeded usings

* Remove the Ryujinx.HLE.OsHle.Handles namespace

* Remove hbmenu automatic load on process exit

* Rename Ns to Device, rename Os to System, rename SystemState to State

* Move Exceptions and Utilities out of OsHle

* Rename OsHle to HOS

* Rename OsHle folder to HOS

* IManagerDisplayService and ISystemDisplayService style fixes

* BsdError shouldn't be public

* Add a empty new line before using static

* Remove unused file

* Some style fixes on NPDM

* Exit gracefully when the application is closed

* Code style fixes on IGeneralService

* Add 0x prefix on values printed as hex

* Small improvements on finalization code

* Move ProcessId and ThreadId out of AThreadState

* Rename VFs to FileSystem

* FsAccessHeader shouldn't be public. Also fix file names casing

* More case changes on NPDM

* Remove unused files

* Move using to the correct place on NPDM

* Use properties on KernelAccessControlMmio

* Address PR feedback

2 files changed, 76 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Friend/IFriendService.cs b/Ryujinx.HLE/HOS/Services/Friend/IFriendService.cs
new file mode 100644
index 00000000..3b06ba8a
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/IFriendService.cs
@@ -0,0 +1,49 @@
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.HOS.SystemState;
+using Ryujinx.HLE.Logging;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Friend
+{
+    class IFriendService : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IFriendService()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 10601, DeclareCloseOnlinePlaySession },
+                { 10610, UpdateUserPresence            }
+            };
+        }
+
+        public long DeclareCloseOnlinePlaySession(ServiceCtx Context)
+        {
+            UserId Uuid = new UserId(
+                Context.RequestData.ReadInt64(),
+                Context.RequestData.ReadInt64());
+
+            if (Context.Device.System.State.TryGetUser(Uuid, out UserProfile Profile))
+            {
+                Profile.OnlinePlayState = OpenCloseState.Closed;
+            }
+
+            return 0;
+        }
+
+        public long UpdateUserPresence(ServiceCtx Context)
+        {
+            UserId Uuid = new UserId(
+                Context.RequestData.ReadInt64(),
+                Context.RequestData.ReadInt64());
+
+            //TODO.
+            Context.Device.Log.PrintStub(LogClass.ServiceFriend, "Stubbed.");
+
+            return 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs b/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
new file mode 100644
index 00000000..065e230d
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Friend/IServiceCreator.cs
@@ -0,0 +1,27 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Friend
+{
+    class IServiceCreator : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IServiceCreator()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 0, CreateFriendService }
+            };
+        }
+
+        public static long CreateFriendService(ServiceCtx Context)
+        {
+            MakeObject(Context, new IFriendService());
+
+            return 0;
+        }
+    }
+}
\ No newline at end of file