feat: add debug print of response messages in RPCView send_message

Add a flush-enabled print statement to output the messages list after
appending the formatted message in the send_message method of RPCView.
This aids in debugging by exposing the accumulated response messages
directly to stdout during execution.

src/snek/view/rpc.py

@@ -78,6 +78,7 @@ class RPCView(BaseView):
                     html=message['html'],
                     username=user['username'] 
                 ))
+                print("Response messages:",messages,flush=True)
             return messages
         
         async def get_channels(self):