codesandbox integration

[CraigCav]

Would be super interesting to see if we could use codesandboxer to deploy components to codesandbox. This would provide:

• optionally including a link on failed tests to view the output (markup/css etc) of a component
• a means to draw a boundary around component (and its dependencies) such that it can be easily deployed to a webserver
  • an alternative to environment to JSDOM to render the component (better support for APIs like getBoundingClientRect and other DOM measurement apis)
  • better support for rendering snapshots of DOM state that isn't captured in HTML snapshot generated by JSDOM (for example, activeElement)