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.
case ConnectionType::ADDR_FETCH:
                    case ConnectionType::FEELER:
                        setConnected.insert(pnode->addr.GetGroup(addrman.m_asmap));
                } 
            }
        }
        ConnectionType conn_type = ConnectionType::OUTBOUND_FULL_RELAY;
        int64_t nTime = GetTimeMicros();
        bool anchor = false;
        bool fFeeler = false;
        
        
        
        
        
        
        
        
        
        if (!m_anchors.empty() && (nOutboundBlockRelay < m_max_outbound_block_relay)) {
            conn_type = ConnectionType::BLOCK_RELAY;
            anchor = true;
        } else if (nOutboundFullRelay < m_max_outbound_full_relay) {
            
        } else if (nOutboundBlockRelay < m_max_outbound_block_relay) {
            conn_type = ConnectionType::BLOCK_RELAY;
        } else if (GetTryNewOutboundPeer()) {
            
        } else if (nTime > nNextFeeler) {
            nNextFeeler = PoissonNextSend(nTime, FEELER_INTERVAL);