hs-v3: Add the 2 missing SOCKS extended errors from prop304
The two missing codes are the intro failure and RP failure.
* X'F2' Onion Service Introduction Failed Client failed to introduce to the service meaning the descriptor was found but the service is not anymore at the introduction points. The service has likely changed its descriptor or is not running. * X'F3' Onion Service Rendezvous Failed Client failed to rendezvous with the service which means that the client is unable to finalize the connection.
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