By default, flameshot uses the program's default dbus protocol interface
to communicate with gnome's screenshot protocol, but this is now broken
on some gnome installations, so we'll use gnome-screenshot as gnome's
wayland screenshot adapter and then communicate directly with the gnome
screenshot component!

To enable the GNOME-based generic wayland screenshot adapter, enable it
using the following cmake parameter:

```
-DUSE_WAYLAND_GNOME=true
```