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

4 files changed, 102 insertions, 0 deletions

diff --git a/Ryujinx.HLE/HOS/Services/Ns/IAddOnContentManager.cs b/Ryujinx.HLE/HOS/Services/Ns/IAddOnContentManager.cs
new file mode 100644
index 00000000..b8455d41
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Ns/IAddOnContentManager.cs
@@ -0,0 +1,42 @@
+using Ryujinx.HLE.HOS.Ipc;
+using Ryujinx.HLE.Logging;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Ns
+{
+    class IAddOnContentManager : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IAddOnContentManager()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                { 2, CountAddOnContent },
+                { 3, ListAddOnContent  }
+            };
+        }
+
+        public static long CountAddOnContent(ServiceCtx Context)
+        {
+            Context.ResponseData.Write(0);
+
+            Context.Device.Log.PrintStub(LogClass.ServiceNs, "Stubbed.");
+
+            return 0;
+        }
+
+        public static long ListAddOnContent(ServiceCtx Context)
+        {
+            Context.Device.Log.PrintStub(LogClass.ServiceNs, "Stubbed.");
+
+            //TODO: This is supposed to write a u32 array aswell.
+            //It's unknown what it contains.
+            Context.ResponseData.Write(0);
+
+            return 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Ns/IServiceGetterInterface.cs b/Ryujinx.HLE/HOS/Services/Ns/IServiceGetterInterface.cs
new file mode 100644
index 00000000..a27cfe60
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Ns/IServiceGetterInterface.cs
@@ -0,0 +1,20 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Ns
+{
+    class IServiceGetterInterface : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IServiceGetterInterface()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                //...
+            };
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Ns/ISystemUpdateInterface.cs b/Ryujinx.HLE/HOS/Services/Ns/ISystemUpdateInterface.cs
new file mode 100644
index 00000000..6ade8865
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Ns/ISystemUpdateInterface.cs
@@ -0,0 +1,20 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Ns
+{
+    class ISystemUpdateInterface : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public ISystemUpdateInterface()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                //...
+            };
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.HLE/HOS/Services/Ns/IVulnerabilityManagerInterface.cs b/Ryujinx.HLE/HOS/Services/Ns/IVulnerabilityManagerInterface.cs
new file mode 100644
index 00000000..cff334c0
--- /dev/null
+++ b/Ryujinx.HLE/HOS/Services/Ns/IVulnerabilityManagerInterface.cs
@@ -0,0 +1,20 @@
+using Ryujinx.HLE.HOS.Ipc;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS.Services.Ns
+{
+    class IVulnerabilityManagerInterface : IpcService
+    {
+        private Dictionary<int, ServiceProcessRequest> m_Commands;
+
+        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
+
+        public IVulnerabilityManagerInterface()
+        {
+            m_Commands = new Dictionary<int, ServiceProcessRequest>()
+            {
+                //...
+            };
+        }
+    }
+}
\ No newline at end of file