Adding a delay to prevent "Unsafe Shutdowns" for nvme drive

We just had a conversation on MNT Reform on libera.chat IRC that touched this subject. Sigrid agreed that I copypaste what she said to this post:

Maybe this is also interesting for @nanocodebug as the maintainer of the reform lpc module.

Currently, we use this systemd hack to turn off the unit: Files · main · Reform / MNT Reform Tools · GitLab