Changes

| In Firefox for Android we are using an A/B testing framework based on "Switchboard". We want to extract re-write this framework into in Kotlin as a standalone -library that can be used in our other Android apps.

| The existing code in Firefox for Android lives [See more detailed project description: https://dxrgithub.mozilla.orgcom/mozilla-centralpocmo/sourcefretboard/mobilewiki/androidGoogle-Summer-of-Code-2018 List of issues/basetasks: https:/java/orggithub.com/mozillapocmo/geckofretboard/switchboard here]. Originally we started using the existing "Switchboard" library. But over time the behavior of this code changed as our requirements changed. Therefore we do not only want to extract the code - but also re-write it (in Kotlin).issues