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

{
    bool disconnected = false;
    LOCK(cs_vNodes);
    for (CNode* pnode : vNodes) {
        if (subnet.Match(pnode->addr)) {
            pnode->fDisconnect = true;
            disconnected = true;
        }
    }
    return disconnected;
}
bool CConnman::DisconnectNode(const CNetAddr& addr)
{
    return DisconnectNode(CSubNet(addr));
}
bool CConnman::DisconnectNode(NodeId id)
{
    LOCK(cs_vNodes);
    for(CNode* pnode : vNodes) {
        if (id == pnode->GetId()) {
            pnode->fDisconnect = true;
            return true;
        }
    }
    return false;
}
void CConnman::RecordBytesRecv(uint64_t bytes)