Implement read command

[shaleh]

Resurrects #3966. This is 100% @idursun's work. Using read_to_string from #7431.

closes #3796

[the-mikedavis]

It's customary to give the original author Co-authored-by attribution when reusing work: https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/creating-a-commit-with-multiple-authors

[shaleh]

I can do that. No problem.

[the-mikedavis]

For the coauthor part, git/github is expecting the attribution in a Name <email> format so it should be:

Co-authored-by: Ibrahim Dursun <[email protected]>

To fix the docs CI you can run cargo xtask docgen and commit the results

[shaleh]

Thank you for taking a look @the-mikedavis. All of the items identified have been resolved.

[pascalkuthe]

the test associated with this command is failing on windows in ci