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.
LogPrint(BCLog::NET, "receive version message: %s: version %d, blocks=%d, us=%s, peer=%d%s\n",
                  cleanSubVer, pfrom.nVersion,
                  pfrom.nStartingHeight, addrMe.ToString(), pfrom.GetId(),
                  remoteAddr);
        int64_t nTimeOffset = nTime - GetTime();
        pfrom.nTimeOffset = nTimeOffset;
        AddTimeData(pfrom.addr, nTimeOffset);
        
        if (greatest_common_version <= 70012) {
            CDataStream finalAlert(ParseHex("60010000000000000000000000ffffff7f00000000ffffff7ffeffff7f01ffffff7f00000000ffffff7f00ffffff7f002f555247454e543a20416c657274206b657920636f6d70726f6d697365642c2075706772616465207265717569726564004630440220653febd6410f470f6bae11cad19c48413becb1ac2c17f908fd0fd53bdc3abd5202206d0e9c96fe88d4a0f01ed9dedae2b6f9e00da94cad0fecaae66ecf689bf71b50"), SER_NETWORK, PROTOCOL_VERSION);
            m_connman.PushMessage(&pfrom, CNetMsgMaker(greatest_common_version).Make("alert", finalAlert));
        }
        
        if (pfrom.IsFeelerConn()) {
            pfrom.fDisconnect = true;
        }
        return;
    }
    if (pfrom.nVersion == 0) {
        
        Misbehaving(pfrom.GetId(), 1, "non-version message before version handshake");
        return;
    }
    
    const CNetMsgMaker msgMaker(pfrom.GetCommonVersion());
    if (msg_type == NetMsgType::VERACK) {
        if (pfrom.fSuccessfullyConnected) return;
        if (!pfrom.IsInboundConn()) {
            LogPrintf("New outbound peer connected: version: %d, blocks=%d, peer=%d%s (%s)\n",
                      pfrom.nVersion.load(), pfrom.nStartingHeight,