ubuntu: Enable 3D Acceleration option with virtio1.0-gpu

For all releases since 18.04 LTS. Later releases ultimately derive from this version so they will get the option automatically.

Closes: https://gitlab.gnome.org/GNOME/gnome-boxes/-/issues/709

Sorry, I deleted my fork and recreated it to try to fix the CI. So the previous discussion is at !425 (closed)