add example for using directives

[chiptus]

as per https://spectrum.chat/testing-library/help-vue/mocking-directives~1167b8e5-a303-494e-a0c5-593d75e8b792 example is needed to test a component that is using a directive

[afontcu]

🎉 This issue has been resolved in version 4.2.0 🎉

The release is available on:

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

Your semantic-release bot 📦🚀