added an enumerate and a top level interface for predefined frames managed by the factory
added an enumerate and a top level interface for predefined frames managed by the factory

Yakushima/Orekit,liscju/Orekit,attatrol/Orekit,Yakushima/Orekit,ProjectPersephone/Orekit,CS-SI/Orekit,treeform/orekit,petrushy/Orekit,wardev/orekit,ProjectPersephone/Orekit,attatrol/Orekit,liscju/Orekit,CS-SI/Orekit,petrushy/Orekit