mobile: Use Gtk.FlowBox instead of the current grid-like layout for the crosswords catalog view
NOTE: To mimic the phone screen https://github.com/tchx84/flathub-mobile/blob/master/FEDORA.md#to-mimic-the-screen-setup
Edited by Martin Abente Lahaye
NOTE: To mimic the phone screen https://github.com/tchx84/flathub-mobile/blob/master/FEDORA.md#to-mimic-the-screen-setup