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.

scripts/build.ci.ps1

@@ -446,7 +446,7 @@ if ( $singleheader -and (Test-Path (Join-Path $path_singleheader "gen/gen.hpp"))
 		'gen.hpp'
 	)
 	$exclude  = $null
-	format-cpp $path_gen $include $exclude
+	# format-cpp $path_gen $include $exclude
 }
 
 if ( $test )