virt-viewer from Virtualization project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/Virtualization/openSUSE_Tumbleweed/Virtualization.repo
zypper refresh
zypper install virt-viewer

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/Virtualization/15.5/Virtualization.repo
zypper refresh
zypper install virt-viewer

For 15.4 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/Virtualization/15.4/Virtualization.repo
zypper refresh
zypper install virt-viewer

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/Virtualization/15.6/Virtualization.repo
zypper refresh
zypper install virt-viewer