gfxboot from openSUSE:ALP:Experimental:Slowroll:Base project

需要 standard ，用 root 執行：

zypper addrepo https://download.opensuse.org/repositories/openSUSE:ALP:Experimental:Slowroll:Base/standard/openSUSE:ALP:Experimental:Slowroll:Base.repo
zypper refresh
zypper install gfxboot