[gnome-software] (6 commits) Non-fast-forward update to branch wip/mak/libas

[Matthias Klumpp <mak src gnome org>]

The branch 'wip/mak/libas' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  9f42295... Port to appstream
  11a3559... Delete defunct remnants of shell-extension support
  796ccff... Use separate enum for OS update pseudo-apps
  d2159c0... Replace AS_URL_KIND_MISSING with explicit property
  4db0b6b... trivial: Suggest using appstreamcli for NEWS/validate
  8c82661... hack: Make CI work (temporary commit)

Commits added to the branch:

  2aa9e16... Port to appstream
  fb0b9d9... Delete defunct remnants of shell-extension support
  dba91b8... Use separate enum for OS update pseudo-apps
  6d5a8e1... Replace AS_URL_KIND_MISSING with explicit property
  34c17f7... trivial: Suggest using appstreamcli for NEWS/validate
  415b8aa... hack: Make CI work (temporary commit)