Backport of Document the tfstacks fmt command into v1.10

[github-actions]

Backport

This PR is auto-generated from #36202 to be assessed for backporting due to the inclusion of the label 1.10-backport.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@rkoron007
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "8069751f6ee481e50ff451d07da17c10e6d0d4ca", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Quick PR to add the new tfstacks fmt command!

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Overview of commits

• b0bcdfd

• b7d9063

• 76dea21

• 8069751

[rkoron007]

Same content— looks good!

[github-actions]

Reminder for the merging maintainer: if this is a user-visible change, please update the changelog on the appropriate release branch.

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active contributions.
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