UX heuristics and checklist for CLI

[amylily]

For initial UX reviews for the CLI, below is the checklist of things we gauge for when working with the CLI.

Reference: https://docs.google.com/document/d/1FT2q_fw8Og_yGiG3UfCcOqURk9sbV31_GiXcRVrH7F4/edit#heading=h.35poomqznemf