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, "peer %d sent invalid getcfilters/getcfheaders with " 
                 "start height %d and stop height %d\n",
                 peer.GetId(), start_height, stop_height);
        peer.fDisconnect = true;
        return false;
    }
    if (stop_height - start_height >= max_height_diff) {
        LogPrint(BCLog::NET, "peer %d requested too many cfilters/cfheaders: %d / %d\n",
                 peer.GetId(), stop_height - start_height + 1, max_height_diff);
        peer.fDisconnect = true;
        return false;
    }
    filter_index = GetBlockFilterIndex(filter_type);
    if (!filter_index) {
        LogPrint(BCLog::NET, "Filter index for supported type %s not found\n", BlockFilterTypeName(filter_type));
        return false;
    }
    return true;
}
/**
 * Handle a cfilters request.
 *
 * May disconnect from the peer in the case of a bad request.
 *
 * @param[in]   peer            The peer that we received the request from
 * @param[in]   vRecv           The raw message received
 * @param[in]   chain_params    Chain parameters
 * @param[in]   connman         Pointer to the connection manager
 */
static void ProcessGetCFilters(CNode& peer, CDataStream& vRecv, const CChainParams& chain_params,