In DM-24411 I've added the sphinx-click to the default configuration for stack documentation projects. This means you won't need to add sphinx_click in your own conf.py file. It also means that these docs can be built by Jenkins (e.g. daily documentation builds, weekly builds, etc.).

Hi Michelle, thanks for agreeing to review.

Some typos to fix. Merge is approved.

An organization question about generic click framework code being in daf_butler instead of a more generic package.

The documentation will help with writing subcommands for butler/pipetask.

The code/option reuse is nice. For future discussion, not sure how to take advantage of this if using YAML config files instead of command line arguments.