Add ESLint with the eslint-plugin-testing-library and adjust examples

[the-ult]

Context

To provide the 'best' examples possible it would be good to use the eslint-plugin-testing-library and eslint-plugin-jest-dom

And update the examples with the best practices.

@see common-mistakes-with-testing-library

[timdeschryver]

Thanks @the-ult , I was waiting on a migration schematic and NX recently released one.
If you want, feel free to migrate the linter.

[the-ult]

Hi @timdeschryver ,

I will try to find some time this week to add a PR.
Would you prefer 2 different PR's or can I combine them?

• replace TSLint with ESLint
• add testing-library eslint rules

[timdeschryver]

@the-ult yea, I think that would be ideal!

[the-ult]

Hey @timdeschryver I added the pull-request for the migration part
Could you take look? And check/test it where needed?

[github-actions]

🎉 This issue has been resolved in version 10.6.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀