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

return a.nKeyedNetGroup < b.nKeyedNetGroup;
}
static bool CompareNodeBlockTime(const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)
{
    
    if (a.nLastBlockTime != b.nLastBlockTime) return a.nLastBlockTime < b.nLastBlockTime;
    if (a.fRelevantServices != b.fRelevantServices) return b.fRelevantServices;
    return a.nTimeConnected > b.nTimeConnected;
}
static bool CompareNodeTXTime(const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)
{
    
    if (a.nLastTXTime != b.nLastTXTime) return a.nLastTXTime < b.nLastTXTime;
    if (a.fRelayTxes != b.fRelayTxes) return b.fRelayTxes;
    if (a.fBloomFilter != b.fBloomFilter) return a.fBloomFilter;
    return a.nTimeConnected > b.nTimeConnected;
}
static bool CompareNodeBlockRelayOnlyTime(const NodeEvictionCandidate &a, const NodeEvictionCandidate &b)
{
    if (a.fRelayTxes != b.fRelayTxes) return a.fRelayTxes;
    if (a.nLastBlockTime != b.nLastBlockTime) return a.nLastBlockTime < b.nLastBlockTime;
    if (a.fRelevantServices != b.fRelevantServices) return b.fRelevantServices;
    return a.nTimeConnected > b.nTimeConnected;
}
template<typename T, typename Comparator>
static void EraseLastKElements(std::vector<T> &elements, Comparator comparator, size_t k)