authselect from security:idm project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/security:idm/openSUSE_Tumbleweed/security:idm.repo
zypper refresh
zypper install authselect

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/security:idm/15.6/security:idm.repo
zypper refresh
zypper install authselect

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/security:idm/15.5/security:idm.repo
zypper refresh
zypper install authselect