icon request: Gitea

### Describe the Icon

Ionicons already includes icons for GitLab, GitHub, and Bitbucket, which is great.
However, it would be helpful to also include an icon for [Gitea](https://gitea.io/), which is also a popular Git service.

Adding a Gitea icon would make Ionicons more complete and useful for developers who work with Gitea.

### Links to Examples

Official SVG: https://github.com/go-gitea/gitea/blob/main/public/assets/img/gitea.svg
Simple Icons: https://github.com/simple-icons/simple-icons/blob/develop/icons/gitea.svg

### Additional Information

_No response_