Minor - Implements component serialization - V12.9.0

Adds serialization and deserialization functionality to the ECS component system.

This allows components to be saved and loaded, enabling scene persistence.
The IdentityComponent is updated to support serialization/deserialization.
The scene saving logic in scene_manager is updated to serialize components instead of hardcoded values.

enginecustom/src/inc/system/ecs/entity.h

@@ -124,6 +124,14 @@ public:
         }
     }
 
+    /**
+     * Get all components of the entity.
+     * @return A constant reference to the map of components.
+     */
+    const std::unordered_map<ComponentTypeID, ComponentPtr>& GetAllComponents() const {
+        return m_Components;
+    }
+
 private:
 
     /**