Wildcard domain block

### 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](https://github.com/LemmyNet/lemmy-ui) repo for UI / frontend issues. - [X] Do you agree to follow the rules in our [Code of Conduct](https://join-lemmy.org/docs/code_of_conduct.html)? ### Is your proposal related to a problem? There are always individuals or companies that try to circumvent blocks with Sobdomain or new tdl's. ### Describe the solution you'd like. I'd like the ability to create a wildcard domain block so all subdomains on a domain can be automatically blocked. Eg, *awakiri.* to block activitypub.awakiri.com, activitypub.awakiri.app, etc ### Describe alternatives you've considered. Dont know ### Additional context _No response_