There are several ways to support this (I have my ideas) and it would be interesting to hear what you think would be a good solution, so feel free to add a PR! We have other work we need to do first, but I wouldn't be surprised if we add it later because I think it could be cool to support generation of e.g. HTML based documentation.
If anyone's using https://github.com/asdf-vm/asdf for managing their local dev tools, I wrote a little plugin for polylith a couple nights ago. https://gitlab.com/runswithd6s/asdf-polylith. Currently, it just downloads the jar from GitHub releases page and builds a couple shim executables.
This looks really cool! Thank you very much for this.