Feature Request: utils command or flag for checking if generated mardown docs have changed. #103

I'm not sure it this functionality belongs in typer-cli or should be implemented outside of it.

Basically, I'm interested in similar behavior to black --check or isort --check which can be run in CI or pre-commit to warn the developer that they need to run those tools. I have auto generated docs and I want them to be kept in sync with code changes to the CLI and trigger a CI failure if the previous version of the docs no longer matches what would be generated now. It wouldn't be too hard to implement this outside of typer-cli with a bash script, but curious if others would find it useful.