Dd4hep plugin

Provides the needed plugins to allow geometry input from DD4hep. Added an example with two different FCC like test trackers described in DD4hep and the job options to test the geometry and the extrapolation.

EventData/EventDataUtils/cmt/requirements

-package EventDataUtils
-
-manager Andreas Salzburger < Andreas.Salzburger@cern.ch >
-
-use AtlasPolicy          AtlasPolicy-*
-use GaudiInterface       GaudiInterface-*        External  
-use Surfaces		 Surfaces-*		 Geometry
-use CoreUtils		 CoreUtils-*		 Core
-use Algebra              Algebra-*               Core
-
-#apply_pattern installed_library
-
-private
-macro_append cppflags $(ActsCoreParameterDefs)