Add a partitioning system for Sun disklabel/vtoc

This is the partitioning system used on sparc machines.
Confirmed working with a Solaris install iso image.
Added to the haiku package for sparc and to haiku_extras for other
architectures.

Fixes #15638

Change-Id: I0584bef5e6a66eff9a33eb6675d5533cc9a45d1e
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2709
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>