Super Key (Purism Logo) on Librem Laptops should trigger app search
The Super Key (Purism Logo) on Librem Laptops running PureOS GNOME shell typically allow a keyboard shortcut to search an application, it'd be nice to have similar user-flow in phosh.
Expected behavior:
- super-key (Purism Logo) pressed
- auto-focus to search, type 'termi' and see it auto-select "terminal"
- hit enter to launch selected terminal
Keyboard string to launch from keyboard only would be: superkey, 'termi', enter