POC: Field component

[mimarz]

Create a proof of concept pattern in React and CSS for generic container components for common form elements.

Some designsystems use generic form classes, usually called form-group for their form components to have consistent placement of label, descriptions and such around an input/textarea/select element.

Do we want to use this approach? Pros and cons?

Notes:

• https://designsystem.dk/kode/komponenter/inputfelter/
• https://design-system.service.gov.uk/components/text-input/