[RFE] Support "tree based" express installations
"tree based" installations are already supported for libosinfo and have been improved (patches still under review) recently in a way that Boxes could support providing express installation through it instead of media installations for basically all OSes that already support express installation (apart from RHEL and Microsoft Windows).
In order to do so, we'd need to adapt Boxes code and have a new UI (in case it's desired) for offering the users to do so.
Mind that although "tree based" installations would always require internet, the advantage of downloading only a few MBs over a few GBs (comparing the size of kernel + initrd with the media size) before the installation starts is a huge thing mainly for users with a not so good internet connection.