move compressions to optdepend
I use pigz. Why should I required to install gzip or xz to use dracut ?
Moving all compressions to optdepend
These are optional for mkinitcpio already - see https://gitlab.archlinux.org/archlinux/packaging/packages/mkinitcpio/-/blob/main/PKGBUILD?ref_type=heads
Edited by Laszlo Gombos