S4 hibernate design document

Hi again!

Following up on the previous email announcing the Foundation's intent to add S4
hibernate support to FreeBSD [1], kib@ has started working on a more detailed
design document for this:

https://hackmd.io/@eJNIw-SNShyq1LSp2azAcw/Bka-kXTpge

There are still a couple unsolved bits of the design, so we'd like to gather
some more feedback on this document. If you could reply with any feedback
within a week (before Oct 23rd) that would be ideal for us!

Thanks,
Aymeric on behalf of the FreeBSD Foundation

[1] https://lists.freebsd.org/archives/freebsd-current/2025-August/008616.html