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.
{
    
    Optional<CNetMessage> msg(std::move(vRecv));
    
    msg->m_command = hdr.GetCommand();
    msg->m_time = time;
    msg->m_message_size = hdr.nMessageSize;
    msg->m_raw_message_size = hdr.nMessageSize + CMessageHeader::HEADER_SIZE;
    uint256 hash = GetMessageHash();
    
    RandAddEvent(ReadLE32(hash.begin()));
    
    if (memcmp(hash.begin(), hdr.pchChecksum, CMessageHeader::CHECKSUM_SIZE) != 0) {
        LogPrint(BCLog::NET, "CHECKSUM ERROR (%s, %u bytes), expected %s was %s, peer=%d\n",
                 SanitizeString(msg->m_command), msg->m_message_size,
                 HexStr(Span<uint8_t>(hash.begin(), hash.begin() + CMessageHeader::CHECKSUM_SIZE)),
                 HexStr(hdr.pchChecksum),
                 m_node_id);
        out_err_raw_size = msg->m_raw_message_size;
        msg = nullopt;
    } else if (!hdr.IsCommandValid()) {
        LogPrint(BCLog::NET, "HEADER ERROR - COMMAND (%s, %u bytes), peer=%d\n",
                 hdr.GetCommand(), msg->m_message_size, m_node_id);
        out_err_raw_size = msg->m_raw_message_size;
        msg = nullopt;
    }