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.Graphics/Shader/Instructions/InstEmitHelper.cs

@@ -53,7 +53,7 @@ namespace Ryujinx.Graphics.Shader.Instructions
             }
             else if (floatType == FPType.FP64)
             {
-                //TODO.
+                // TODO.
             }
 
             throw new ArgumentException($"Invalid floating point type \"{floatType}\".");