[demo] More 'robotic' behavior demonstration

[SteveMacenski]

In the last couple of years, I've worked to add in algorithms and systems with the idea that a global path is a general sense of a route and I would like dynamic behavior to be possible by the robot using the trajectory planners where ever possible.

I did add in the RPP controller that's a path follower (and obviously MPPI can be tuned for that as well), so I think it would be useful to have a configured robot setup that does more or less very robotic behavior that it precisely follows the path, stops with obstacles, and waits. The more traditional back of house behavior for robotic systems, rather than the highly fluid and dynamic systems I generally work towards.

So action items: Retune and provide an example of a very rigid path following system rather than giving the the trajectory planner broad leeway to find its own way through the world using the global path as a general sense of direction. It may involve a bit of development, but should be straight forward when problems are run into