[nav2] How to trigger the nav2 BT navigator from another node?
I know that the BT navigator starts going to work when a topic is being published to, but I want to feed the algorithm a pre-made path. If I call the FollowPath action server directly, will the BT navigator use the behavior tree to navigate? Otherwise, what's the proper way for an outside node to send a navigation mission to the nav2 system without asking the system to compute a path?