/apps: separate /apps/testgame into /apps/platformer and /apps/scenery, update /apps/template

apps/template/game.c

@@ -1,4 +1,4 @@
-#include "townengine/game_api.h"
+#include "twn_game_api.h"
 #include "state.h"
 
 #include <malloc.h>

apps/template/state.h

@@ -1,7 +1,7 @@
 #ifndef STATE_H
 #define STATE_H
 
-#include "townengine/game_api.h"
+#include "twn_game_api.h"
 
 /* populate it with state information */
 struct state {