contentpack remove feature WIP

src/frontend/menu.h

@@ -2,9 +2,11 @@
 #define FRONTEND_MENU_H_
 
 class Engine;
+class Level;
 
 namespace menus {
     void create_version_label(Engine* engine);
+    void create_pause_panel(Engine* engine, Level* level);
     void create_menus(Engine* engine);
     void refresh_menus(Engine* engine);
 }