Support Gitea: Codeberg as repository for registering dub package.

[BoQsc]

https://codeberg.org/
https://about.gitea.com/

[WebFreak001]

since gitea support is implemented right now, this should be easy to add - however we don't actually have a way to use the same repository provider multiple times from the config yet. I think it shouldn't be too hard to add though + it should also support short-form host versions

[ArthaTi]

Will you add just Codeberg or any Gitea provider? I self-host Gitea on https://git.samerion.com