Deploy the work tracked as part of [ENG-9644](https://linear.app/comm/issue/ENG-9644/backup-service-backup-client-work-for-a-minimal-version-of-backup).
Changes are diffs from the stack starting with D13803.
Backup images are [here](https://hub.docker.com/r/commapp/backup-server/tags)
Git tag [link](https://github.com/CommE2E/comm/tree/backup-v0.5.0).
The staging deploy was on Nov 7, so it's been less than a week. However, the Backup service is not used on production at all, so I'm publishing this diff ahead of time.