Set time only admin message

meshtastic/admin.proto

@@ -318,6 +318,12 @@ message AdminMessage {
      */
     bool remove_fixed_position = 42;
 
+    /*
+     * Set time only on the node
+     * Convenience method to set the time on the node (as NTP quality) without any other position data
+     */
+    uint32 set_time_only = 43;
+
     /*
      * Begins an edit transaction for config, module config, owner, and channel settings changes
      * This will delay the standard *implicit* save to the file system and subsequent reboot behavior until committed (commit_edit_settings)