### Description

For ESLint, this is just a setup PR that caps the number of warnings
we're willing to accept.

For TypeScript, I unfortunately need to fix a whole mess of errors to
make ESLint run. Rather than fix all the errors, I'm just throwing down
a bunch of any's to keep the PR small.

CLOSES TURBO-1941

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Co-authored-by: Josh Goldberg ✨ <git@joshuakgoldberg.com>