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.
{
    return RPCHelpMan{"disconnectnode",
                "\nImmediately disconnects from the specified peer node.\n"
                "\nStrictly one out of 'address' and 'nodeid' can be provided to identify the node.\n"
                "\nTo disconnect by nodeid, either set 'address' to the empty string, or call using the named 'nodeid' argument only.\n",
                {
                    {"address", RPCArg::Type::STR,  "fallback to nodeid", "The IP address/port of the node"},
                    {"nodeid", RPCArg::Type::NUM,  "fallback to address", "The node ID (see getpeerinfo for node IDs)"},
                },
                RPCResult{RPCResult::Type::NONE, "", ""},
                RPCExamples{
                    HelpExampleCli("disconnectnode", "\"192.168.0.6:8333\"")