Add Storybook.js

[justinwb]

Implement Storybook.js

Storybook runs outside of your app. This allows you to develop UI components in isolation, which can improve component reuse, testability, and development speed. You can build quickly without having to worry about application-specific dependencies.

This fits very nicely with our approach to solid-react-components. Storybook gives us a smooth way to develop, test, and demonstrate our individual components outside of the generator.