feat(git hooks): introduce husky

[konippi]

Description of Changes

In this PR, by introducing husky, developers can notice that they forgot to run npm run lint at the time of commit.

Checklist

• Executed npm run lint
• Modified relevant documentation
• Verified operation in local environment
• Executed npm run cdk:test and if there are snapshot differences, execute npm run cdk:test:update-snapshot to update snapshots

Related Issues

N/A

[tbrand]

Thank you very much. I agree with introducing Husky, but I think it should be introduced more carefully. There are developers of various levels in GenU.
In the documentation, all mentions of npm run lint have been removed, but please explain this more carefully here.
Specifically, I think we need explanations like "npm run lint is now executed when git commit is run, and if it fails, the commit will result in an error like xxx."