Add HDDs or LUKS encrypted HDDs with Labels to fstab

[SimonWoodtli]

Most people want to use additional disks, some may want them encrypted to do so:
sudo -S sh -c 'printf "%s\n" "LABEL=usb-luks /mnt/usb-luks ext4 defaults 0 2" >> /etc/fstab' <<< "$password"

A small guide:
https://github.com/SimonWoodtli/zet/tree/main/20230908235916

Note: If your Silverblue encryption password is set to the same as your encrypted disks, you only need enter it once at bootup and all disks utilize that password.