Add custom html2react that builds html to the @klarna/ui

[xaviervia]

For example:

import React from 'react'
import {render} from 'react-dom'
import fromHtml from '@klarna/ui/fromHtml'

const html = `<div>
  <h1>Hello</h1>
  <p>Lorem ipsum dolor sit amet</p>
</div>`

render(
  <main>
    {fromHtml(html)}
  </main>,
  document.getElementById('root')
)

The main benefit is for copy that comes from translations and such that needs to be used do that <strong> becomes <Strong> and so on.

[xaviervia]

Being done in #332