Refactoring HOS folder structure (#771)

* Refactoring HOS folder structure

Refactoring HOS folder structure:

- Added some subfolders when needed (Following structure decided in private).
- Added some `Types` folders when needed.
- Little cleanup here and there.
- Add services placeholders for every HOS services (close #766 and #753).

* Remove Types namespaces

Ryujinx.HLE/HOS/Services/Ncm/Lr/ResultCode.cs

@@ -0,0 +1,13 @@
+namespace Ryujinx.HLE.HOS.Services.Ncm.Lr
+{
+    enum ResultCode
+    {
+        ModuleId       = 8,
+        ErrorCodeShift = 9,
+
+        Success = 0,
+
+        ProgramLocationEntryNotFound = (2 << ErrorCodeShift) | ModuleId,
+        AccessDenied                 = (5 << ErrorCodeShift) | ModuleId
+    }
+}