Problem

It's nice to be able to tinker in real time with messages and observe their output.

https://format-message.github.io/icu-message-format-for-translators/editor.html exists for a competing library, but it's imperfect. It would be interesting to have this library host a page that downloads the full suite of packages and have an interactive editor!

It's clearly a lot of work, but nonethless, would be a pretty nifty feature! Thoughts?