Add contact admin message

meshtastic/admin.proto

@@ -397,6 +397,11 @@ message AdminMessage {
      */
     bool commit_edit_settings = 65;
 
+    /*
+     * Add a contact (User) to the nodedb
+     */
+    Contact add_contact = 66;
+
     /*
      * Tell the node to factory reset config everything; all device state and configuration will be returned to factory defaults and BLE bonds will be cleared.
      */
@@ -472,3 +477,15 @@ message NodeRemoteHardwarePinsResponse {
    */
   repeated NodeRemoteHardwarePin node_remote_hardware_pins = 1;
 }
+
+message Contact {
+  /*
+   * The node number of the contact
+   */
+  uint32 node_num = 1;
+
+  /*
+   * The User of the contact
+   */
+  User user = 2;
+}