Implement crates-admin binary

[Turbo87]

This PR resolves #1504 by adding a new crates-admin binary, that combines a lot of the previously separate binaries as subcommands.

I would recommend to review commit-by-commit :)

r? @jtgeibel

[bors]

☔ The latest upstream changes (presumably #2810) made this pull request unmergeable. Please resolve the merge conflicts.

Note that reviewers usually do not review pull requests until merge conflicts are resolved! Once you resolve the conflicts, you should change the labels applied by bors to indicate that your PR is ready for review. Post this as a comment to change the labels:

@rustbot modify labels: +S-waiting-on-review -S-waiting-on-author

[jtgeibel]

The backfill-org-ids bin was removed in #2810 and can be dropped here as well. Also we should be updating bin_names in script/ci/prune-cache.sh as we add/remove binaries. (This is mostly a hack to improve CI cache performance on Travis, and may be less necessary on GH Actions and with fewer binaries, but lets maintain it for now.)

For deployment purposes, monitor and enqueue-job are called from the scheduler on Heroku and it will be best to keep those around for a single deployment cycle. For the rest of the binaries included in this migration, I think it is fine to drop them in this PR.

[Turbo87]

@jtgeibel thanks for the review. I've removed monitor from the crates-admin tool, added it to the prune-cache.sh and removed the now obsolete binaries. :)

[jtgeibel]

I pushed a commit dropping the about attribute on populate (it was leftover from monitor).

I'm fine with migrating enqueue-job and monitor as well. We could even do so in a single PR. Just deploy first commits (up to where the bins are removed), update the scheduler, then deploy the merged commit.

Merging this PR and deploying to staging.

@bors r+

[bors]

📌 Commit 9aa026c has been approved by jtgeibel

[bors]

⌛ Testing commit 9aa026c with merge 01cdee4...

[bors]

☀️ Test successful - checks-actions
Approved by: jtgeibel
Pushing 01cdee4 to master...