publish package from the `dist` folder

[IanEdington]

currently the package is published from the source root directory (/). This results in import statements like the following:

import { render } from "@faire/mjml-react/dist/src/utils/render";

At build time if we moved everything into /dist that's required to publish the package we could publish from within the dist folder resulting in import statements like this:

import { render } from "@faire/mjml-react/src/utils/render";

split out from #64

[emmclaughlin]

Fixed in #77