fix(add-new-hook): use es module import syntax in add-new-hook script

[czinck]

What is the current behavior, and the steps to reproduce the issue?

yarn new-hook useNewHook fails with an error on the require() lines.

What is the expected behavior?

It creates a new directory and files.

How does this PR fix the problem?

It uses the ES module import syntax, instead of cjs. It looks like this file was missed in https://github.com/react-hookz/web/pull/1472, which converted everything else to use ES module syntax.

Checklist

• [x] Have you read contribution guideline?
• [x] Have you added an explanation of what your changes do and why you'd like us to include them?
• [ ] Is there an existing issue for this PR?
  • link issue here
• [x] Have the files been linted and formatted?
• [ ] Have the docs been updated to match the changes in the PR?
• [ ] Have the tests been updated to match the changes in the PR?
• [x] Have you run the tests locally to confirm they pass?