Feature request: add codeberg equivalents of the github functions

[rgayler]

Many researchers are currently looking to minimise their dependencies on US corporate controlled infrastructure – including GitHub and GitLab. Codeberg is a popular European based alternative to US-based services such as GitHub and GitLab. As a non-profit community-led effort for free and open source projects Codeberg aligns with the values of many researchers and rstats users.

I think having Codeberg equivalents of the {usethis} GitHub functions would simplify the adoption of Codeberg by the segment of the rstats user base that finds {usethis} generally helpful (like me).