feat: add typescript-async-loaders example

[TG199]

PR Checklist

• Addresses an existing open issue: works on 🛠 Repo: Add tests for issues discovered with native import() requiring mocha#5382
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

[mark-wiemer]

Thanks @TG199 ! I reworked this example to simplify it and added a readme, please let me know if I accidentally removed anything critical :)

[JoshuaKGoldberg]

LGTM, with the one note on the last bit of phrasing in the README.md. 🚀

[JoshuaKGoldberg]

Oh, except for the failing test builds in CI.

[mark-wiemer]

Yeah lerna doesn't like NODE_OPTIONS, @TG199 if you could look into a fix for that we'd appreciate it, otherwise I'll come back to this one in a bit

[TG199]

Alright, I'll look into it