How add unl0kr

Since the lack, #18 , of an option to do things etc. when booting I am not sure to how add unl0kr to the boot process. In order to unlock FDE using it, instead of bare cryptsetup.

It is in pmOS repo but they have a different initramfs.
https://pkgs.postmarketos.org/package/master/postmarketos/riscv64/unl0kr
https://wiki.postmarketos.org/wiki/Unl0kr