WIP - Broken Compile : Added pragma once and includes to all files + Parser fixes, and String improvements

Adding the pragma once and includes the files broke compilation, still diagnosing why.

- Some string functions were moved to the cpp, still need to do some more evaluation of it and the containers...
- Added support for forceinline and neverinline to parsing (untested)
- Added support for specifiers in operator cast such as explicit, inline/forceinline/neverinline, etc.
    - Before it only support const.
    - Still need to support volatile.
- Forceinline was not supported at all for tokenization, fixed that.

project/dependencies/macros.hpp

@@ -1,3 +1,6 @@
+#pragma once
+#include "header_start.hpp"
+
 #pragma region Macros
 
 #define zpl_cast( Type ) ( Type )
@@ -161,4 +164,3 @@ void swap( Type& a, Type& b )
 }
 
 #pragma endregion Macros
-