WIP: @stencil/storybook-plugin experimentation

[valadas]

This is an experimentation of a new stencil-specific storybook plugin maintained by the stencil team at https://github.com/stenciljs/storybook which is also a work in progress and not ready for prime time. However, it currently builds and when complete will provide the following advantages.

• Less config
• Automatic and type-safe argTypes
• Better automatic docs
• Shorter stories (less config) and read TSX support for stories without using lit-html or other hacks
• Live reloading for quick development within stories themselves.