Create backup docs

[akeller]

Description

Closes #3684. This change should be backported.

When should this change go live?

• This is a bug fix, security concern, or something that needs urgent release support.
• This is already available but undocumented and should be released within a week.
• This on a specific schedule and the assignee will coordinate a release with the DevEx team. (apply hold label or convert to draft PR)
• This is part of a scheduled alpha or minor. (apply alpha or minor label)
• There is no urgency with this change and can be released at any time.

PR Checklist

• My changes are for an already released minor and are in /versioned_docs directory.

• My changes are for the next minor and are in /docs directory (aka /next/).

• I included my new page in the sidebar file(s).

• My changes require an Engineering review, and I've assigned the Engineering DRI or delegate.
• My changes require a technical writer review, and I've assigned @christinaausley as a reviewer.

[github-actions]

👋 🤖 ✅ Looks like the changes were ported across versions, nice job! 🎉

You can read more about the versioning within our docs in our documentation guidelines.

[akeller]

Open questions:

• Are backups an enterprise only features?
• Is this also available in Console SM?
• Are there any additional screenshots that should be included?

[akeller]

Reached out to ask-controller - https://camunda.slack.com/archives/C051AA63QV8/p1715364542060449

[sjiekak]

looks good, thanks

[Sijoma]

Thanks for documenting this. I guess the one manual is too much after the merge.

[Sijoma]

lgtm 🚀

[sjiekak]

🚢