Hi!  Thanks for maintaining distro-info(-data), it's really great ❤

It would be helpful if it *also* included the backports EOL dates --
these are generally one year after release, so could be synthetic, but
it feels more "correct" to actually encode them explicitly in the data
IMO, since they don't necessarily *have* to be exactly one year after
release.

See also https://backports.debian.org/Instructions/ especially:

https://lists.debian.org/debian-backports-announce/2024/07/msg00000.html