Added SceneItemComponent registry (unfinished)

src/dawn/game/_DawnGame.hpp

@@ -14,6 +14,7 @@
 #include "locale/LocaleManager.hpp"
 #include "save/SaveManager.hpp"
 #include "audio/AudioManager.hpp"
+#include "scene/SceneItemComponentListItems.hpp"
 
 #define DAWN_GAME_INIT_RESULT_SUCCESS 0
 #define DAWN_GAME_UPDATE_RESULT_SUCCESS 0
@@ -23,6 +24,9 @@ namespace Dawn {
   class DawnHost;
 
   class IDawnGame {
+    protected:
+      SceneItemComponentListItems componentListItems;
+
     public:
       Scene *scene = nullptr;