chore: add script to generate e2e status list

[merceyz]

What's the problem this PR addresses?

The e2e status table in our README.md needs to be kept up to date manually whenever we add or remove an e2e test and there is no automated check to ensure that it's correct.

How did you fix it?

Add a script to generate an e2e status list and add a CI check for it.

Checklist

• [x] I have read the Contributing Guide.
• [x] I have set the packages that need to be released for my changes to be effective.
• [x] I will check that all automated PR checks pass before the PR gets reviewed.