Summary:
eslint-config-prettier should have been peerDependency not devDependency.
Correct them by moving it.
(Also do some yml cleanups.)
Signed-off-by: Yongmin Hong <revi@omglol.email>
Test Plan: `npm ci`.
Reviewers: O1 revi & automations, revi
Reviewed By: O1 revi & automations, revi
Differential Revision: https://issuetracker.revi.xyz/D342