Add: state for className

[beatrizmaselli]

What is the purpose of this pull request?

Add additional classNames to the styleguide inputs. It will bring a possibility to customize the label color or position.

What problem is this solving?
In the design concept of our client the field label should have a red color when the field fails validation and since the label tag is on the upper level then input tag that has validation text, it's impossible to style it via CSS.

How should this be manually tested?
Just to check that these additional classNames are presented in the address form field HTML

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Requires change to documentation, which has been updated accordingly.

[vtex-io-ci-cd]

Hi! I'm VTEX IO CI/CD Bot and I'll be helping you to publish your app! 🤖

Please select which version do you want to release:

• Patch (backwards-compatible bug fixes)

• Minor (backwards-compatible functionality)

• Major (incompatible API changes)

And then you just need to merge your PR when you are ready! There is no need to create a release commit/tag.

• No thanks, I would rather do it manually 😞

[wagnerlduarte]

@beatrizmaselli Do you have a workspace, image or screencast of these new css classes operating?
It could impact any other accounts for some reason?