RPM Registry: Show zypper commands for SUSE based distros as well (#25981) (#26020)
Backport #25981 by @asdil12
After RPM is supported with https://github.com/go-gitea/gitea/pull/23380
let's show the user
how to add the repo and install the RPM via all common package managers.
Co-authored-by: Dominik Heidler <dominik@heidler.eu>