Merged requested to merge jakedane/gnome-control-center:jakedane-main-patch-06204 into main
This is part of an initiative to use "app" instead of "applications", see: Teams/Design/initiatives#123
Redo of !1539 (closed) that was closed by a ghosting user.
Replaces "application" with "app" in user facing strings in these panels:
- camera, location, microphone
Fixes: #2208 (closed).