This is a POC script for #2108. Current version doesn't create issues automatically.

[iesahin]

Fixes #2108

The script creates help-text directory and outputs all --help text to different files. It checks git diff output to see whether the output changed, and if so asks the user to create an issue with gh. Currently formatting of the issue is broken but it should be enough to show what I mean.

I can update the script to follow a certain branch in the repository and not to pollute the master. It can also be modified to use master (or some other branch) in DVC core, so that we can update the docs.

[iesahin]

It uses zsh because of the path operators. I can adapt to bash if needed.

[iesahin]

I think we can just close this and reopen it as needed. I can continue checking the dvc --help outputs and create issues myself if needed.