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 (fFeeler) {
                
                int randsleep = GetRandInt(FEELER_SLEEP_WINDOW * 1000);
                if (!interruptNet.sleep_for(std::chrono::milliseconds(randsleep)))
                    return;
                LogPrint(BCLog::NET, "Making feeler connection to %s\n", addrConnect.ToString());
            }
            OpenNetworkConnection(addrConnect, (int)setConnected.size() >= std::min(nMaxConnections - 1, 2), &grant, nullptr, conn_type);
        }
    }
}
std::vector<AddedNodeInfo> CConnman::GetAddedNodeInfo()
{
    std::vector<AddedNodeInfo> ret;
    std::list<std::string> lAddresses(0);
    {
        LOCK(cs_vAddedNodes);
        ret.reserve(vAddedNodes.size());
        std::copy(vAddedNodes.cbegin(), vAddedNodes.cend(), std::back_inserter(lAddresses));
    }
    
    std::map<CService, bool> mapConnected;
    std::map<std::string, std::pair<bool, CService>> mapConnectedByName;
    {
        LOCK(cs_vNodes);
        for (const CNode* pnode : vNodes) {
            if (pnode->addr.IsValid()) {
                mapConnected[pnode->addr] = pnode->IsInboundConn();
            }
            std::string addrName = pnode->GetAddrName();