Related issue: https://codeberg.org/forgejo/forgejo/issues/8581
This should be a nice first step towards RTL support. Future PRs can look at updating the tailwind classes, changing some of the icons (arrow left might need to become arrow right in some cases for example, and updating the template files)
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/12491
Reviewed-by: 0ko <0ko@noreply.codeberg.org>