Add/command target backup

[philderbeast]

Please read Github PR Conventions and then fill in one of these two templates.

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Template Α: This PR modifies behaviour or interface

Include the following checklist in your PR:

• Patches conform to the coding conventions.
• Any changes that could be relevant to users have been recorded in the changelog.
  • Is the change significant? If so, remember to add significance: significant in the changelog file.
• The documentation has been updated, if necessary.
• Manual QA notes have been included.
• Tests have been added. (Ask for help if you don’t know how to write them! Ask for an exemption if tests are too complex for too little coverage!)

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👉️ Template B: This PR does not modify behaviour or interface

E.g. the PR only touches documentation or tests, does refactorings, etc.

Include the following checklist in your PR:

• [👍] Patches conform to the coding conventions.
• Is this a PR that fixes CI? If so, it will need to be backported to older cabal release branches (ask maintainers for directions).

[mergify]

⚠️ The sha of the head commit of this PR conflicts with #9744. Mergify cannot evaluate rules on this PR. ⚠️

[ulysses4ever]

@philderbeast you're supposed to remove one of the two templates in the PR description

[philderbeast]

@ulysses4ever, when you asked me to preserve the PR template on #10599, I started this new PR from one of my *-BACKUP branches so I could copy its markup across but accidentally opened this PR. Unable to delete it, I closed it immediately.

[ulysses4ever]

Oh, silly me! Sorry!

[philderbeast]

Sorry for the trouble. I didn't leave a reason for closing but should have. I was rushing it.