Embroider: Exchange config between ember and webpack

[gossi]

Theemo is configured in ember-cli-build.js of your application:

const app = new EmberApp(defaults, {
  theemo: {
    defaultTheme: 'sample'
  }
});

this config needs to find its way into the TheemoService at run time, together with the detected themes. Currently the code for that lives in the lib source folder.

For information exchange, the contentFor() hook is used to aggregate the information and puts it as json into a <script> tag, which the the service is reading to receive the information.

The idea is to drop contentFor() hook and find a replacement. Ideas include:

• provide a snippet to include in index.html, similar to Embroider: Inject Default theme via <link> in index.html #40
• moves this into webpack?