Add GROUP_APP

portnums.proto

@@ -92,6 +92,11 @@ enum PortNum {
   IP_TUNNEL_APP = 33;
 
   /*
+   * Used for managing chat groups
+   */
+  GROUP_APP = 34;
+
+   /*
    * Provides a hardware serial interface to send and receive from the Meshtastic network.
    * Connect to the RX/TX pins of a device with 38400 8N1. Packets received from the Meshtastic
    * network is forwarded to the RX pin while sending a packet to TX will go out to the Mesh network.