Refactoring commands handling (#728)

* Refactoring commands handling

- Use Reflection to handle commands ID.
- Add all symbols (from SwIPC so not all time accurate).
- Re-sort some services commands methods.
- Some cleanup.
- Keep some empty constructor for consistency.

* Fix order in IProfile

Ryujinx.HLE/HOS/Services/Am/IHomeMenuFunctions.cs

@@ -3,30 +3,21 @@ using Ryujinx.HLE.HOS.Ipc;
 using Ryujinx.HLE.HOS.Kernel.Common;
 using Ryujinx.HLE.HOS.Kernel.Threading;
 using System;
-using System.Collections.Generic;
 
 namespace Ryujinx.HLE.HOS.Services.Am
 {
     class IHomeMenuFunctions : IpcService
     {
-        private Dictionary<int, ServiceProcessRequest> _commands;
-
-        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
-
         private KEvent _channelEvent;
 
         public IHomeMenuFunctions(Horizon system)
         {
-            _commands = new Dictionary<int, ServiceProcessRequest>
-            {
-                { 10, RequestToGetForeground        },
-                { 21, GetPopFromGeneralChannelEvent }
-            };
-
             // TODO: Signal this Event somewhere in future.
             _channelEvent = new KEvent(system);
         }
 
+        [Command(10)]
+        // RequestToGetForeground()
         public long RequestToGetForeground(ServiceCtx context)
         {
             Logger.PrintStub(LogClass.ServiceAm);
@@ -34,6 +25,8 @@ namespace Ryujinx.HLE.HOS.Services.Am
             return 0;
         }
 
+        [Command(21)]
+        // GetPopFromGeneralChannelEvent() -> handle<copy>
         public long GetPopFromGeneralChannelEvent(ServiceCtx context)
         {
             if (context.Process.HandleTable.GenerateHandle(_channelEvent.ReadableEvent, out int handle) != KernelResult.Success)
@@ -48,4 +41,4 @@ namespace Ryujinx.HLE.HOS.Services.Am
             return 0;
         }
     }
-}
+}