fb-ask-pass-rs: asks the user for a password on the framebuffer showing the firmware image

Primary usage: run it from a initcpio hook (on archlinux) to ask for the LUKS passphrase, while showing the firmware picture. The passphrase is saved in a file (/crypto_keyfile.bin) which the encrypt hook uses to unlock LUKS volumes.

https://github.com/gdamjan/fb-ask-pass-rs