Follow-up to COMPASS-5421. I initially opened it to have an eslint check set up for that so that we can immediately see the issue when writing code, not only a CI failure that reacts on the dependency list of the package. This ticket is to finish the POC that I already have as an addition to the check that was added.

Things to do in POC

• Align the license in the package.json of the new package
• Add a few tests
• Check for @emotion usage in addition to checking for @leafygreen usage

See https://github.com/mongodb-js/compass/pull/2820