MateFish C unfinished

Merge pull request #9 from 42ChessInc/larocqueg-patch-1

Changed:

int mouse_hook(int button, int x, int y, t_interface *interface)
to
int mouse_hook(int button, int x, int y, void *param)
so mlx_mouse_hook works

Makefile:
Added a check to see if stockfish is already compiled, so if the main program does not compile it does not have to recompile stockfish.

Removed:
mlx_init.h from interfaces.h