✨ Codeberg.org support

### Is your feature request related to a problem? Please describe.

no

### Describe the solution you'd like

Please add support for adding codeberg.org accounts.

### Describe alternatives you've considered

GItHub. But I don't like my code scanned and used for copilot. GitLab is a usability nightmare.

### Additional context

Many open source projects and people moved to codeberg.org after all that GitHub copilot controversy. Supporting these type of accounts make a great commit to this project.

此 issue 未指出檔案、測試或進入點。先找出帳戶提供者如何表示及處理，然後將要求的 Codeberg 支援與現有的提供者整合進行比較。當使用者可以新增及使用 Codeberg.org 帳戶時，即表示完成。

由索引模型根據 Issue 內容生成。