stkutil: Add Set Up Menu response builder

src/stkutil.c

@@ -3218,6 +3218,7 @@ unsigned int stk_pdu_from_response(const struct stk_response *response,
 					NULL);
 		break;
 	case STK_COMMAND_TYPE_REFRESH:
+	case STK_COMMAND_TYPE_SETUP_MENU:
 		break;
 	default:
 		return 0;

src/stkutil.h

@@ -1033,6 +1033,7 @@ struct stk_response {
 		struct stk_response_generic play_tone;
 		struct stk_response_poll_interval poll_interval;
 		struct stk_response_generic refresh;
+		struct stk_response_generic set_up_menu;
 		struct stk_response_generic send_sms;
 	};