Make the Clocks example use the resource system

Make the Clocks example use the Qt resource system and the
shared main(), in order to have easy deployment to all
platforms and support for shadow builds.

Task-number: QTBUG-37203
Change-Id: Ia235b6b2397cfaeb20f0c7ea0d6196c603b20099
Reviewed-by: Alan Alpert <aalpert@blackberry.com>