[cli] Add prompt command for CLI logger. (#9897)
[cli] Add prompt command for CLI logger. (#9897)

Co-authored-by: Richard Liaw <3230d85c7494674e1ab9b2b5f7d3b4d6790b2a83@berkeley.edu>
richardliaw/ray,robertnishihara/ray,ray-project/ray,robertnishihara/ray,ray-project/ray,robertnishihara/ray,richardliaw/ray,robertnishihara/ray,robertnishihara/ray,pcmoritz/ray-1,pcmoritz/ray-1,ray-project/ray,richardliaw/ray,ray-project/ray,pcmoritz/ray-1,richardliaw/ray,pcmoritz/ray-1,richardliaw/ray,richardliaw/ray,pcmoritz/ray-1,robertnishihara/ray,pcmoritz/ray-1,ray-project/ray,robertnishihara/ray,ray-project/ray,pcmoritz/ray-1,robertnishihara/ray,ray-project/ray,pcmoritz/ray-1,robertnishihara/ray,richardliaw/ray,richardliaw/ray,ray-project/ray