add clone method in websocket

src/socketify/socketify.py

@@ -1143,6 +1143,11 @@ class WebSocket:
         self.socket_data = None
         self.got_socket_data = False
 
+
+    def clone(self):
+        # clone and preserve this websocket in another instance
+        return WebSocket(self.websocket, self.app)
+
     def trigger_for_each_topic_handler(self, topic):
         if hasattr(self, "_for_each_topic_handler") and hasattr(
             self._for_each_topic_handler, "__call__"