Adjust naming conventions and general refactoring in HLE Project (#527)

* Rename enum fields

* Naming conventions

* Remove unneeded ".this"

* Remove unneeded semicolons

* Remove unused Usings

* Don't use var

* Remove unneeded enum underlying types

* Explicitly label class visibility

* Remove unneeded @ prefixes

* Remove unneeded commas

* Remove unneeded if expressions

* Method doesn't use unsafe code

* Remove unneeded casts

* Initialized objects don't need an empty constructor

* Remove settings from DotSettings

* Revert "Explicitly label class visibility"

This reverts commit ad5eb5787c.

* Small changes

* Revert external enum renaming

* Changes from feedback

* Apply previous refactorings to the merged code

Ryujinx.HLE/Exceptions/InvalidNpdmException.cs

@@ -4,6 +4,6 @@ namespace Ryujinx.HLE.Exceptions
 {
     public class InvalidNpdmException : Exception
     {
-        public InvalidNpdmException(string ExMsg) : base(ExMsg) { }
+        public InvalidNpdmException(string message) : base(message) { }
     }
 }