cli: Inform user when no feedback was found

This might either be because the event doesn't exist or when the profile
doesn't have any feedback on the current level.

Closes: https://source.puri.sm/Librem5/feedbackd/-/issues/76

cli/fbcli.c

@@ -93,6 +93,9 @@ trigger_event (const char *name, const gchar *profile, gboolean important, gint
   g_main_loop_run (loop);
   g_main_loop_unref (loop);
 
+  if (lfb_event_get_end_reason (event) == LFB_EVENT_END_REASON_NOT_FOUND)
+    g_print ("No feedback found for '%s' at level '%s'\n", name, lfb_get_feedback_profile ());
+
   return success;
 }