Unties settings page from package version and adds button to delete the
package version
Settings page now allows for deletion of entire package and it's
versions as opposed to a single version
Adds an API endpoint to delete the entire package with all versions from
registry
fixes: https://github.com/go-gitea/gitea/issues/36904
Co-Authored-By: gemini-3-flash
---------
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>
