Add markAllAsTouched() to FormControl

[goetzrobin]

I want to mark all form fields as touched when submitting a form if it is not valid.
This allows me to then show all error messages.

[github-actions]

🎉 This issue has been resolved in version 1.2.0 🎉

The release is available on:

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

Your semantic-release bot 📦🚀