Add support for Codeberg and Forĝejo

[tallship]

Please add support for Codeberg, one of the largest git forge platforms behind GitHub and GitLab - Codeberg runs the Forĝejo git forge platform.

Codeberg is located at https://Codeberg.org

• The Forĝejo software forge platform is a drop-in replacement for Gitea, so adding support for Codeberg Also means that support will necessarily also include support for all installed Forĝejo and Gitea forges in existence automatically.
• The Forĝejo project is located at https://forgejo.org
• The Gitea project is located at https://gitea.io