Implement fault injection that will simulate OS crash or reboot

https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html

`echo X > /proc/sysrq-trigger`, where X is:
- `b`, Will immediately reboot the system without syncing or unmounting your disks.
- `c`, Will perform a system crash by a NULL pointer dereference. A crashdump will be taken if configured.
- `j`, Forcibly “Just thaw it” - filesystems frozen by the FIFREEZE ioctl.