The old REVIEWERS file was useful back in the mailing lists days, but
nowadays we use GitLab, and we tag people by using their usernames, not
email addresses.
Most of us know each other's usernames by now, but documentation like
this is not meant for us but for everyone else, so that they can talk to
us.
Let's convert the file into GitLab's CODEOWNERS format, which maps files
in the repository to GitLab users that people can look up or tag in
their issues or merge requests.
See also: https://docs.gitlab.com/ce/user/project/code_owners.html
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/2178>