Aggiunta Collections per ridurre dimensione main

src/collections/headers/collection_interface.hpp

@@ -0,0 +1,20 @@
+#include "../../pieces/headers/piece_interface.hpp"
+#include "../../joints/headers/joint_interface.hpp"
+
+#ifndef COLL_INTERFACE_H
+#define COLL_INTERFACE_H
+
+struct collection{
+    std::vector<PieceInterface*> pieces;
+    std::vector<JointInterface*> joints;
+};
+
+
+class CollectionInterface{
+    public:
+        virtual collection create(ReferencePlane plane) = 0;
+        virtual ~CollectionInterface(){};
+};
+
+
+#endif