[BE] Opt-in remote security takedown feature #3638

Requirements

• [X] Is this a feature request? For questions or discussions use https://lemmy.ml/c/lemmy_support
• [X] Did you check to see if this issue already exists?
• [X] Is this only a feature request? Do not put multiple feature requests in one issue.
• [X] Is this a backend issue? Use the lemmy-ui repo for UI / frontend issues.

Is your proposal related to a problem?

hacking?

Describe the solution you'd like.

Pitch Jerboa should have an opt-in feature for servers that lets them be temporarily taken down remotely for their own safety by the Jerboa non-profit in case of an extreme security vulnerability requiring an update

Motivation This would protect the servers of those who opt-in along with the users on that server. As it is an opt-in, no one will be left annoyed. All users who join the server alongside the owner would be aware of a potential takedown at any moment and would know of its importance and how it is solely for their safety. Servers can freely opt-in or out.

Describe alternatives you've considered.

sending out a please update notice?

Additional context

mastodon got lucky that mozilla paid pentesters who reported it and it got patched before it coukd be exploited, lemmy migjt not be so fortjnate