(SceneNode) Added virtual constructor idiom

(Light) Added default constructor


Former-commit-id: 591e6a8435d2cea6238e70c0058d381b8d547f3e

include/Nazara/Graphics/TextSprite.hpp

@@ -28,6 +28,9 @@ class NAZARA_API NzTextSprite : public NzSceneNode, NzAbstractAtlas::Listener
 
 		void Clear();
 
+		NzTextSprite* Clone() const;
+		NzTextSprite* Create() const;
+
 		const NzColor& GetColor() const;
 		NzMaterial* GetMaterial() const;
 		nzSceneNodeType GetSceneNodeType() const override;