Misc cleanup (#708)

* Fix typos

* Remove unneeded using statements

* Enforce var style more

* Remove redundant qualifiers

* Fix some indentation

* Disable naming warnings on files with external enum names

* Fix build

* Mass find & replace for comments with no spacing

* Standardize todo capitalization and for/if spacing

Ryujinx.HLE/HOS/Services/Aud/IHardwareOpusDecoder.cs

@@ -37,8 +37,8 @@ namespace Ryujinx.HLE.HOS.Services.Aud
         {
             long result = DecodeInterleaved(context);
 
-            //TODO: Figure out what this value is.
-            //According to switchbrew, it is now used.
+            // TODO: Figure out what this value is.
+            // According to switchbrew, it is now used.
             context.ResponseData.Write(0L);
 
             return result;