Provides a demo example implementation showing the usage of
the URI scheme handlers extension point

Change-Id: Iac8be39c89122e736f77143785f2651f8d9588f1
Signed-off-by: Matthias Becker <ma.becker@sap.com>
Signed-off-by: Marcus Hoepfner <marcus.hoepfner@sap.com>