ci: checks for `eslint-config-turbo` interface (#10794)
### Description
Because JavaScript packaging is so finnicky, I'm thinking its a good
idea to make sure our interfaces stay ecosystem compliant. PRs like
https://github.com/vercel/turborepo/pull/10747 and
https://github.com/vercel/turborepo/pull/10754 have potential to break
things, so its nice to have some sanity checking. (I haven't checked yet
if those PRs specifically are right, but they made me think about adding
some tooling like this.)
### Testing Instructions
CI
