UpdateStrategy Refactor: 6. draft, now looks good, not fully tested

framework/engine/src/mm/engine_fwd.hpp

@@ -1,10 +1,10 @@
 #pragma once
-
 // this is a forwarding header
 
 #include <entt/fwd.hpp>
 
 namespace MM {
+	namespace UpdateStrategies { class UpdateStrategy; }
 	class Engine;
 	using Entity = entt::entity;
 	using Scene = entt::basic_registry<Entity>;