logger: add safety (switch) at minimal rate

src/modules/logger/logged_topics.cpp

@@ -69,6 +69,7 @@ void LoggedTopics::add_default_topics()
 	add_topic("position_setpoint_triplet", 200);
 	add_topic("radio_status");
 	add_topic("rate_ctrl_status", 200);
+	add_topic("safety", 1000);
 	add_topic("sensor_bias", 1000);
 	add_topic("sensor_combined", 100);
 	add_topic("sensor_correction", 1000);