Feature request: Scripts to help with manual installs (e.g. for FDE)

[dzwdz]

Retyping all the commands needed for a FDE install gets boring after a few times. Most of those could be wrapped in a few small scripts to save people a bit of time during installs.
To be a bit more exact about what those scripts would do - they'd prepare the bind mounts for the chroot, set up /etc/default/grub and /boot/volume.key. All of those would be pretty easy to implement. I'd do that myself, but idk how - should I create a package with those scripts and then add it to build-x86-images.sh?

Also, how about including genfstab?