Port to GTK4 and libadwaita
Known issues:
- Some trouble with showing Address Books, due to missing pieces in libevolutiondataserverui
- Everywhere I left a comment
XXX
- Had to disable the cheese integration, since that also needs a GTK4 port → Need to reimplement on top of pipewire (but maybe not for alpha release)
Edited by Niels De Graef