More SWIG style declarations so less work for each target language

Rinkaa

Objectives: - [ ] Use `%typemap` to glue up the return value array pointer with the out argument array length; - [ ] Use `%extend` to generate constructor functions for common structs, so we can prepare values during struct instance construction call in most script languages, eg. `vec = raylib.Vector2(100,100)`

Rinkaa

New objective added: - [ ] Use `%typemap` to alter functions that passes struct values in params: Convert those params to basic type params(int, float, char* etc.) or script type params(luatable etc.) for better exposure to the script language, by avoiding rapid copying from the script owned object structs to the param structs