less and ava plugin migration + appreciation

Hei there,

Just recently found out about this task runner and I'm lovin it so far! It provides simple task based runner and really useful in a monorepo project. I actually prefer NPM scripts over task runner, but for large monorepo project it'll inevitably become tedious to maintain and sync across multiple packages.

Now start, provides ability to orchestrate build stanza right from a root of monorepo, without much complexion. Really like it!

I noticed that less and ava were originally supported as plugin but not yet migrated to the current start monorepo. Is there any ETA in when they'll be migrated? Or is there any pointer if I were to implement custom plugin for them in the current version of start?