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.
{RPCResult::Type::NUM, "minfeefilter", "The minimum fee rate for transactions this peer accepts"},
                            {RPCResult::Type::OBJ_DYN, "bytessent_per_msg", "",
                            {
                                {RPCResult::Type::NUM, "msg", "The total bytes sent aggregated by message type\n"
                                                              "When a message type is not listed in this json object, the bytes sent are 0.\n"
                                                              "Only known message types can appear as keys in the object."}
                            }},
                            {RPCResult::Type::OBJ, "bytesrecv_per_msg", "",
                            {
                                {RPCResult::Type::NUM, "msg", "The total bytes received aggregated by message type\n"
                                                              "When a message type is not listed in this json object, the bytes received are 0.\n"
                                                              "Only known message types can appear as keys in the object and all bytes received\n"
                                                              "of unknown message types are listed under '"+NET_MESSAGE_COMMAND_OTHER+"'."}
                            }},
                        }},
                    }},
                },
                RPCExamples{
                    HelpExampleCli("getpeerinfo", "")
            + HelpExampleRpc("getpeerinfo", "")
                },
        [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
{
    NodeContext& node = EnsureNodeContext(request.context);
    if(!node.connman || !node.peerman) {
        throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
    }
    std::vector<CNodeStats> vstats;
    node.connman->GetNodeStats(vstats);
    UniValue ret(UniValue::VARR);