Refactoring result codes (#731)

* refactoring result codes

- Add a main enum who can handle some orphalin result codes and the default `ResultCode.Success` one.
- Add sub-enum by services when it's needed.
- Remove some empty line.
- Recast all service calls to ResultCode.
- Remove some unneeded static declaration.
- Delete unused `NvHelper` class.

* NvResult is back

* Fix

Ryujinx.HLE/HOS/Services/Hid/IActiveVibrationDeviceList.cs

@@ -6,11 +6,11 @@ namespace Ryujinx.HLE.HOS.Services.Hid
 
         [Command(0)]
         // ActivateVibrationDevice(nn::hid::VibrationDeviceHandle)
-        public long ActivateVibrationDevice(ServiceCtx context)
+        public ResultCode ActivateVibrationDevice(ServiceCtx context)
         {
             int vibrationDeviceHandle = context.RequestData.ReadInt32();
 
-            return 0;
+            return ResultCode.Success;
         }
     }
 }