Add a dedicated group to control system-wide jobserver access, such
as the one provided by dev-build/steve. This will replace the current
portage:portage ownership, and make it possible to grant users access
without giving them full portage group access. Note that we don't want
open access to system-wide jobservers, as an untrusted user could then
grab all tokens and effectively block other processes from building.
Signed-off-by: Michał Górny <mgorny@gentoo.org>
Part-of: https://codeberg.org/gentoo/gentoo/pulls/2
Signed-off-by: Michał Górny <mgorny@gentoo.org>
3114d0425d