rework to context: now there's engine and user code copies, renaming of fields, most things that shouldn't be there are hidden

src/game_object/twn_win32_game_object.c

@@ -48,7 +48,7 @@ static void load_game_object(void) {
 
     handle = new_handle;
 
-    if (ctx.game.tick_count != 0)
+    if (ctx.game.frame_number != 0)
         log_info("Game object was reloaded\n");
 
     return;