Bug#974084: Rework Devuan targets into separate entities

[Ivan J. <parazyd@dyne.org>]

Package: debootstrap
Version: 1.0.123

Hi. I've submitted patches to debootstrap which reimplement the logic of
the Devuan targets (ceres, chimaera, beowulf, ascii) into being separate
from the "sid" target. I believe the patches are pretty straightforward,
but if there are any questions or suggestions, don't hesitate to tell :)

The patches can be found on salsa:

    https://salsa.debian.org/installer-team/debootstrap/-/merge_requests/50

I hope this reaches you well. Thank you.

Best regards,
Ivan