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/Nifm/IStaticService.cs

@@ -1,24 +1,12 @@
-using Ryujinx.HLE.HOS.Ipc;
-using System.Collections.Generic;
-
 namespace Ryujinx.HLE.HOS.Services.Nifm
 {
     [Service("nifm:u")]
     class IStaticService : IpcService
     {
-        private Dictionary<int, ServiceProcessRequest> _commands;
-
-        public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
-
-        public IStaticService(ServiceCtx context)
-        {
-            _commands = new Dictionary<int, ServiceProcessRequest>
-            {
-                { 4, CreateGeneralServiceOld },
-                { 5, CreateGeneralService    }
-            };
-        }
+        public IStaticService(ServiceCtx context) { }
 
+        [Command(4)]
+        // CreateGeneralServiceOld() -> object<nn::nifm::detail::IGeneralService>
         public long CreateGeneralServiceOld(ServiceCtx context)
         {
             MakeObject(context, new IGeneralService());
@@ -26,6 +14,8 @@ namespace Ryujinx.HLE.HOS.Services.Nifm
             return 0;
         }
 
+        [Command(5)] // 3.0.0+
+        // CreateGeneralService(u64, pid) -> object<nn::nifm::detail::IGeneralService>
         public long CreateGeneralService(ServiceCtx context)
         {
             MakeObject(context, new IGeneralService());