unify TCP_SOCKET into ETCP_SOCKET with is_tcp flag; add local+remote addr to member detail links with arrow display

tools/chatgui/transport/utun_node.cpp

@@ -217,7 +217,7 @@ QList<NodeAddr> UtunNode::getInviteAddresses(DbManager* db) {
 
         /* 3) TCP from local TCP sockets */
         {
-            struct TCP_SOCKET* ts = m_instance->tcp_sockets;
+            struct ETCP_SOCKET* ts = m_instance->tcp_sockets;
             while (ts) {
                 struct sockaddr_storage* sa = &ts->interface_addr;
                 if (sa->ss_family == AF_INET) {