SDLPP: make copySelf actually copy everything

sdlpp/sdlpp_rectrenderer.hpp

@@ -4,6 +4,7 @@
 #include "sdlpp_common.hpp"
 #include "sdlpp_renderobject.hpp"
 #include "sdlpp_rectcolider.hpp"
+#include "sdlpp_circlecolider.hpp"
 
 namespace SDLPP {
 class SDLPPSCOPE RectangleRender : public RenderObject {
@@ -45,6 +46,7 @@ public:
     std::string getColor() const;
 
 protected:
+    virtual void copyTo(std::shared_ptr<RenderObject> other) override;
     void updateXY();
     double og_x;
     double og_y;