start project with header, struct, mlx functionnal, and basic key event action

srcs/hook/key_do_action.c

@@ -0,0 +1,9 @@
+#include "cube3d.h"
+
+int		shut_down(t_game *game)
+{
+	mlx_destroy_window(game->mlx_ptr, game->win_ptr);
+	exit(0);
+	free(game);
+	return (0);
+}