[libadwaita] (5 commits) Non-fast-forward update to branch wip/exalm/dark

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/dark' 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:

  6252e57... Add AdwSettings
  8f1c3ae... Add AdwStyleManager
  ca5f80d... application: Proxy AdwStyleManager API
  acc1f57... demo: Set color scheme
  206d17d... demo-window: Remove the dark switcher

Commits added to the branch:

  e3e0ba6... Add AdwSettings
  24ddd34... Add AdwStyleManager
  eee01f6... application: Proxy AdwStyleManager API
  9d28389... demo: Set color scheme
  2395606... demo-window: Remove the dark switcher