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

Ryujinx.HLE/HOS/Ipc/IpcHandleDesc.cs

@@ -0,0 +1,92 @@
+using System;
+using System.IO;
+
+namespace Ryujinx.HLE.HOS.Ipc
+{
+    class IpcHandleDesc
+    {
+        public bool HasPId { get; private set; }
+
+        public long PId { get; private set; }
+
+        public int[] ToCopy { get; private set; }
+        public int[] ToMove { get; private set; }
+
+        public IpcHandleDesc(BinaryReader Reader)
+        {
+            int Word = Reader.ReadInt32();
+
+            HasPId = (Word & 1) != 0;
+
+            ToCopy = new int[(Word >> 1) & 0xf];
+            ToMove = new int[(Word >> 5) & 0xf];
+
+            PId = HasPId ? Reader.ReadInt64() : 0;
+
+            for (int Index = 0; Index < ToCopy.Length; Index++)
+            {
+                ToCopy[Index] = Reader.ReadInt32();
+            }
+
+            for (int Index = 0; Index < ToMove.Length; Index++)
+            {
+                ToMove[Index] = Reader.ReadInt32();
+            }
+        }
+
+        public IpcHandleDesc(int[] Copy, int[] Move)
+        {
+            ToCopy = Copy ?? throw new ArgumentNullException(nameof(Copy));
+            ToMove = Move ?? throw new ArgumentNullException(nameof(Move));
+        }
+
+        public IpcHandleDesc(int[] Copy, int[] Move, long PId) : this(Copy, Move)
+        {
+            this.PId = PId;
+
+            HasPId = true;
+        }
+
+        public static IpcHandleDesc MakeCopy(params int[] Handles)
+        {
+            return new IpcHandleDesc(Handles, new int[0]);
+        }
+
+        public static IpcHandleDesc MakeMove(params int[] Handles)
+        {
+            return new IpcHandleDesc(new int[0], Handles);
+        }
+
+        public byte[] GetBytes()
+        {
+            using (MemoryStream MS = new MemoryStream())
+            {
+                BinaryWriter Writer = new BinaryWriter(MS);
+
+                int Word = HasPId ? 1 : 0;
+
+                Word |= (ToCopy.Length & 0xf) << 1;
+                Word |= (ToMove.Length & 0xf) << 5;
+
+                Writer.Write(Word);
+
+                if (HasPId)
+                {
+                    Writer.Write((long)PId);
+                }
+
+                foreach (int Handle in ToCopy)
+                {
+                    Writer.Write(Handle);
+                }
+
+                foreach (int Handle in ToMove)
+                {
+                    Writer.Write(Handle);
+                }
+
+                return MS.ToArray();
+            }
+        }
+    }
+}