Updated the display controllers to use state controls

src/dawn/scene/components/display/Camera.hpp

@@ -19,8 +19,7 @@ namespace Dawn {
     protected:
       bool_t projectionNeedsUpdating = true;
       glm::mat4 projection;
-
-      void onRenderTargetResize(RenderTarget *target, float_t w, float_t h);
+      std::function<void()> evtResized;
 
     public:
       static Camera * create(Scene *scene) {
@@ -89,6 +88,5 @@ namespace Dawn {
        * Event triggered by the scene item when the item is added to the scene.
        */
       void onStart() override;
-      void onDispose() override;
   };
 }