Added SDL dependencies as Git submodules

src/engine.c

@@ -0,0 +1,11 @@
+#include "SDL.h"
+#include "SDL_image.h"
+#include "SDL_mixer.h"
+#include "SDL_ttf.h"
+#include <stdio.h>
+
+void init(void) {
+  if (SDL_Init(SDL_INIT_EVERYTHING) == 0) {
+    printf("SDL initialiased successfully\n");
+  }
+}