Launch tracking

Edit this issue to keep track of the tasks you're working on towards launch.

We have a rough guide for how to launch a track, which is sorely outdated but
quite possibly better than nothing (I'm so sorry, I'm waaaay behind on getting
documentation updated).
https://github.com/exercism/docs/blob/master/language-tracks/launch/README.md

Check out https://github.com/orgs/exercism/teams/track-maintainers/discussions/1
for details about the #maintainers channel in the exercism-team Slack workspace.

Please ask if you have any questions or if anything is confusing!

The next steps are roughly:

- [x] Select programming language variant (if applicable)
- [x] Select testing framework
- [x] Write first exercise
- [x] Plan initial core + optional exercises
- [x] Add the track to the site as inactive
- [x] Request a track icon
- [x] Write "getting started" instructions for people using the track
- [ ] Launch!
- [ ] Prepare for open source contributions from strangers