Add testing-library/eslint-plugin-testing-library

[blaketarter]

Is your feature request related to a problem? Please describe.

When using testing-library there are some common pitfalls around when to use async and which form of element selectors to use.

Describe the solution you'd like

https://github.com/testing-library/eslint-plugin-testing-library is an eslint plugin that can help resolve those common pitfalls.

Describe alternatives you've considered

N/A

Additional context

We should consider using both the testing-library/recommended and testing-library/react rulesets.

[luiz-chagas]

Fixed on #1039