This fails sometimes just because we're too early, or something.
Also with GNOME Shell 41rc, alt-f1 no longer works to open and
close the overview. super *does* seem to work in KDE these days,
so let's switch from alt-f1 to super everywhere.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
This PR adds the following:
* moves out the presetting procedures, so that two long terminal tests do not have
to run twice
* add methods for application to register when successfully started
* adds a test that checks if all required applications have registered
