docs(readme): adding cypress-audit to the related projects

[mfrachet]

Summary

This PR adds the cypress-audit github project to the list of related projects.

The big picture:

The tools we can use nowadays to verify the quality of our applications are awesome. They help us get a huge amount of confidence about what we ship in production and alert us when some kind of regression occurs.

• Cypress has made business oriented workflow verification super easy and fun
• Lighthouse has provided incredible tools to verify the performance of an application
• Pa11y provides multiple tool to control the accessibility state of our applications in a wonderful way

The problem is that they run in their own context and with their own internal tricks for authentication and page browsing.

The idea of cypress-audit is to unify all of this by providing some Cypress Custom Commands so that you can use these tools directly inside your Cypress tests. Practical for auditing authenticated pages for example.

Related Issues/PRs

N/A

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[mfrachet]

@googlebot I signed it!

[googlebot]

CLAs look good, thanks!

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