Feat: Add a way to display types that are not props

[GlennSouthern]

When we want to display a type that is not a prop type we do a hack like this.

import { AttributesType } from '../src/types';

export default function Attributes(props: AttributesType) {
  return null;
}

It would be nice to be able to get the type directly from a file without using it in this way.