C++ Support

Modules
	Async callback helpers
	Async callback wrapper helper functions and types.
	Pointer wrapper to SDL::free()
	Wraps SDL generated pointers to automatically freeing them.
	Helpers to use C++ strings and byte arrays.
	It has StringParam to use on parameters and StringResult to have a simple std::string-like interface for SDL allocated strings.

Classes
class	SDL::OptionalRef< T >
	Optional-like shim for references. More...
class	SDL::Resource< T >
	A SDL managed resource. More...
class	SDL::SpanRef< T >
	span-like for empty-derived structs More...
class	SDL::StringParam
	Helpers to use C++ strings parameters. More...

Detailed Description