feat(Package/Script): add test:clear-cache

[imsamdez]

This is more a feature request.
It could be great to have add a command in the package.json to clear the cache of nx like npm run test:clear-cache. Actually interesting because if you run all the tests successfully and then makes changes that break the tests, it will still be shown as successful unless you clean the cache.

Testing

Include any additional information about the testing you have completed to
ensure your changes behave as expected. For a speedy review, please check
any of the tasks you completed below during your testing.

• Added unit tests for new functionality
• Tested end-to-end using the local server
• [Segmenters] Tested in the staging environment