rate limit most parameter_update subscriptions

- parameter updates can be quite expensive because they trigger nearly all modules to reload all of their parameters immediately
 - limit modules from updating faster than once per second

src/templates/template_module/template_module.h

@@ -82,7 +82,7 @@ private:
 	)
 
 	// Subscriptions
-	uORB::Subscription	_parameter_update_sub{ORB_ID(parameter_update)};
+	uORB::SubscriptionInterval _parameter_update_sub{ORB_ID(parameter_update), 1_s};
 
 };