Support Codeberg + Forgejo

[blainsmith]

Any plans to support Codeberg and other self-hosted Forgejo instances repos so we (Limeleaf) can add our co-op to the list? I am happy to attempt to dust off my Elixir to add the Codeberg Backend, but I haven't written Elixir in a very very long time. 😄

Our org: https://codeberg.org/limeleaf Codeberg docs: https://codeberg.org/api/swagger