Add Heltec MeshPocket definition (#673)

meshtastic/mesh.proto

@@ -704,6 +704,11 @@ enum HardwareModel {
    */
   RESERVED_FRIED_CHICKEN = 93;
   
+  /*
+   * Heltec Magnetic Power Bank with Meshtastic compatible
+   */
+  HELTEC_MESH_POCKET = 94;
+
   /*
    * ------------------------------------------------------------------------------------------------------------------------------------------
    * Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.