[libadwaita] (7 commits) Non-fast-forward update to branch wip/exalm/inspector

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/inspector' 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:

  1c43be0... Add a GtkInspector extension

Commits added to the branch:

  bffad8a... settings: Rename has_color_schemes() to get_system_supports
  7f08cd2... settings: Expose system-supports-color-scheme as a property
  1af8ad7... style-manager: Anticipate system-supports-color-schemes cha
  fbc8166... demo: Handle system-supports-color-schemes changes in runti
  fa07d6c... settings: Add API to override system appearance
  3e5ff4b... settings: Expose in the ABI
  295e50e... Add a GtkInspector extension