To be able to label incoming tor connections as different from normal localhost connections in e.g. `getpeerinfo` and the peers list in the GUI it'd be useful to have them connect on an alternative local-only port. Or even better, a UNIX socket.

For manually set-up hidden services this would have to be configured manually and could add a `hsport` option or such. The external port would still appear as `XXXXXXXXX.onion:8333`, however internally it would redirect to a that port.

In the case of `torcontrol` this would be easy to set up automatically. It could add a new (localhost) binding port automatically and this code would have to be changed:
- https://github.com/bitcoin/bitcoin/blob/master/src/torcontrol.cpp#L441
- https://github.com/bitcoin/bitcoin/blob/master/src/torcontrol.cpp#L477

if (status_cookie.first && status_cookie.second.size() == TOR_COOKIE_SIZE) {
                
                cookie = std::vector<uint8_t>(status_cookie.second.begin(), status_cookie.second.end());
                clientNonce = std::vector<uint8_t>(TOR_NONCE_SIZE, 0);
                GetRandBytes(clientNonce.data(), TOR_NONCE_SIZE);
                _conn.Command("AUTHCHALLENGE SAFECOOKIE " + HexStr(clientNonce), std::bind(&TorController::authchallenge_cb, this, std::placeholders::_1, std::placeholders::_2));
            } else {
                if (status_cookie.first) {
                    LogPrintf("tor: Authentication cookie %s is not exactly %i bytes, as is required by the spec\n", cookiefile, TOR_COOKIE_SIZE);
                } else {
                    LogPrintf("tor: Authentication cookie %s could not be opened (check permissions)\n", cookiefile);
                }
            }
        } else if (methods.count("HASHEDPASSWORD")) {
            LogPrintf("tor: The only supported authentication mechanism left is password, but no password provided with -torpassword\n");
        } else {
            LogPrintf("tor: No supported authentication method\n");
        }
    } else {
        LogPrintf("tor: Requesting protocol info failed\n");
    }
}
void TorController::connected_cb(TorControlConnection& _conn)
{
    reconnect_timeout = RECONNECT_TIMEOUT_START;
    
    if (!_conn.Command("PROTOCOLINFO 1", std::bind(&TorController::protocolinfo_cb, this, std::placeholders::_1, std::placeholders::_2)))
        LogPrintf("tor: Error sending initial protocolinfo command\n");
}
void TorController::disconnected_cb(TorControlConnection& _conn)