A female base body, beards and more hairstyles

Players choose a gender, a hairstyle and a beard at creation (#126), but the client draws one code-built base body for everyone: gender only picks skirts in the demo outfits, hairstyles are two (full, and the capped hair for cropped styles), beards are not modelled (docs/characters.md › What's missing).

Done when a female base body (with the equipment fitted to it or shared where the shapes agree), a beard mesh and the creation screen's hairstyles exist as models, coverage.json covers them, and paperdoll::body_look_of maps every choice onto them.