For every peer expose through `getpeerinfo` RPC whether or not we selected them as HB peers, and whether or not they selected us as HB peers.

Suggestion by @gmaxwell.
{
    Init(connOptions);
    if (fListen && !InitBinds(connOptions.vBinds, connOptions.vWhiteBinds, connOptions.onion_binds)) {
        if (clientInterface) {
            clientInterface->ThreadSafeMessageBox(
                _("Failed to listen on any port. Use -listen=0 if you want this."),
                "", CClientUIInterface::MSG_ERROR);
        }
        return false;
    }
    for (const auto& strDest : connOptions.vSeedNodes) {
        AddAddrFetch(strDest);
    }
    if (clientInterface) {
        clientInterface->InitMessage(_("Loading P2P addresses...").translated);
    }
    
    int64_t nStart = GetTimeMillis();
    {
        CAddrDB adb;
        if (adb.Read(addrman))
            LogPrintf("Loaded %i addresses from peers.dat  %dms\n", addrman.size(), GetTimeMillis() - nStart);
        else {
            addrman.Clear(); 
            LogPrintf("Invalid or missing peers.dat; recreating\n");