What

• create the new xamarin showcase app. This could be either the existing example app, or a new app that use the same source code as the example app, based on the results of the spike AEROGEAR-2509
• If this app uses the same source code as the current example app, some automation and document should be in place to make sure the code of the app will not be updated manually.
• Update the description and the app name to be the AeroGear Xamarim example app