Patterns of use of Vello crate

This document tries to establish patterns among a list of crates and Github projects using the Vello renderer. The crate list isn’t meant to be exhaustive, but it’s pretty large: I’ve sifted through maybe 40 or so reverse dependencies of the Vello repository, up to the point where most of the READMEs I read were along the lines of “WIP: quick experiment paint shapes with Vello”. Don’t expect…