4332 Restructuring GraphMetricUtils to be only a utils class without setting MetrikKeys
Closes #4332
Removing all key sets so the keys for an element of a class should only be set by the corresponding Metric Provider. GraphicMetricUtils is now purely a utils class. Also moved other classes for refactoring purposes and service structure.
Issue-Ref: 4332 Issue-Url: af3#4332 (closed) Signed-off-by: Konstantin Blaschke blaschke@fortiss.org
Edited by Sebastian Bergemann