Broke files out into library, game, and include. Added a tests/ directory to start building out tests. Gotta figure out WTF is going on w/ the memory management or all dev will have to be restarted. No bueno.

src/sdl3-gametest.c

@@ -40,6 +40,7 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
 	  return SDL_APP_FAILURE;
      }
 
+     /*
      ATTEMPT {
 	 spritesheet *sheet;
 	 sprite *spr;
@@ -72,6 +73,7 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
      } CLEANUP {
      } PROCESS(errctx) {
      } FINISH_NORETURN(errctx);
+     */
      
      /*
      GAME_init_physics();