Should we add support for the class-based Component API?

This could also be implemented as a separate package - and, interestingly, would work with React/Preact as well, enabling them to use hooks in render-methods too.

Here's a working prototype:

https://codesandbox.io/s/fre-component-i6sbs

For now, the prototype requires manually calling a useComponent function to wrap a Component subclass to a function using only hooks. (We might consider integrating this in the h function, where you could check if e.g. type.prototype.render is present, which it is on Component subclasses, but isn't on functional components.)

Features supported so far:

• constructor(props)
• componentDidMount()
• componentWillUnmount()
• props
• state
• render()
• forceUpdate()
• static defaultProps
• static displayName
• setState(state, callback)
• setState(function, callback)
• shouldComponentUpdate(nextProps, nextState)
• componentDidUpdate(prevProps, prevState, snapshot)
• static getDerivedStateFromProps(props, state)
• static getDerivedStateFromError(error)
• componentDidCatch(error, info)
• getSnapshotBeforeUpdate(prevProps, prevState)