Create a React bridge called dot-dom-compat

[styfle]

This is a feature request to add an optional compatibility layer so that existing 3rd party React components could be rendered via dot-dom core.

For comparison, there is a lib called Preact which has a similar API to React, They have an optional preact-compat lib to convert an existing React project to Preact. It might be nice to do the same for dot-dom because this new optional layer doesn't have to be included in the size of the core lib.

Purists can still use the tiny dot-dom core lib and people who want to migrate existing apps can include the compatibility layer.