release: Add images for almost all packages, with & without toolchain

Contains almost everything of use in a container except:

• *lib32
• *dev
• *dbg
• *src
• anything expecting hardware such as device config tools

Differential Revision: https://reviews.freebsd.org/D51471

Reviewed by: dfr, emaste
Approved by: cperciva
MFC after: 1 day
Sponsored by: SkunkWerks, GmbH