Jessica Petersen authored Jul 29, 2023 and Bilal Elmoussaoui committed Aug 06, 2023

Add access keys for switching display mode.

This allows the search provider to stay alive longer than the immediate
shutdown it has now after a search request.

If we unconditionally initialize gegl from startup then much CPU is wasted
when searching from GNOME Shell. `gnome-photos --gapplication-service` is
used to spawn the application for shell search and we likely exit shortly
thereafter.

This shaves off about 2% CPU usage for the "just searching via Shell" case.

And sort a couple includes

The latest release of babl is named babl, while the latest git head is named
babl-0.1

Fixes #208