Add precommit linting and testing to the new /ui

[bbovenzi]

Description

We just initialized the new UI for AIP-38 under /airflow/ui. To continue development, it would be best to add a pre-commit hook to run the linting and testing commands for the new project.

Use case / motivation

The new UI already has linting and testing setup with yarn lint and yarn test. We just need a pre-commit hook for them.

Are you willing to submit a PR?

Yes

Related Issues

no

[boring-cyborg]

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