debian: add install-debian target Refactor install-arch, move the systemd services, first-boot and update-grub to new install-boot target. Only install what is needed on Ubuntu.
debian: Add initramfs-tools implementation for cpio firmware loading - Add initramfs hooks and boot scripts to extract and mount firmware - Add update-m1n1 kernel hook - Add install-initramfs make target - busybox mount doesn't support PARTUUID= so use /dev/disk/by-partuuid
