Touched feature

[LowArmour]

Is your feature request related to a problem? Please describe.
I really need a "touched" feature. A touched input field is a field that the user focused and blurred (onBlur). It is not quite dirty/tainted, the difference being that dirty/tainted occurs onInput, while touched occurs onBlur.

The benefit is that you have full control over CSS this way and you can implement a valid class (i.e., a class that appears only when there are no field errors and onBlur occurred).

Angular framework has this implemented and it really gives devs the power to fully customize the form fields.

This should also come with the ability to trigger touched programmatically.

Describe the solution you'd like
To be able to customize input fields based on "touched" (i.e., input fields that triggered onBlur)

Describe alternatives you've considered
There is nothing that can replace a "touched" feature.

Additional context
No additional context.