Get Webamp to work without Webpack

[captbaritone]

trafficstars

Ideally Webamp should have fewer build steps over time, not more. It would be nice to have a proof of concept that we can:

1. Strip typescript types
2. Create an HTML file that imports the Webamp class
3. Use it

Note that this refers to the Webamp class, not the demo site.

Current blockers:

1. Imported CSS files

Benefits

Once we get to a place where this is possible, we should be able to distribute a non-bundled build, which would allow users to reuse their own version of React/Redux/etc which could dramatically improve bundle size for consumers.