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/Pctl/IParentalControlService.cs

@@ -1,30 +1,20 @@
 using Ryujinx.Common.Logging;
-using Ryujinx.HLE.HOS.Ipc;
-using System.Collections.Generic;
 
 namespace Ryujinx.HLE.HOS.Services.Pctl
 {
     class IParentalControlService : IpcService
     {
-        private Dictionary<int, ServiceProcessRequest> _commands;
-
-        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
-
         private bool _initialized = false;
 
         private bool _needInitialize;
 
         public IParentalControlService(bool needInitialize = true)
         {
-            _commands = new Dictionary<int, ServiceProcessRequest>
-            {
-                { 1,    Initialize                       },
-                { 1001, CheckFreeCommunicationPermission }
-            };
-
             _needInitialize = needInitialize;
         }
 
+        [Command(1)] // 4.0.0+
+        // Initialize()
         public long Initialize(ServiceCtx context)
         {
             if (_needInitialize && !_initialized)
@@ -39,6 +29,8 @@ namespace Ryujinx.HLE.HOS.Services.Pctl
             return 0;
         }
 
+        [Command(1001)]
+        // CheckFreeCommunicationPermission()
         public long CheckFreeCommunicationPermission(ServiceCtx context)
         {
             Logger.PrintStub(LogClass.ServicePctl);