Evaluation: Allow expression of exampleValue for collection classes and Entities

[chris-volk]

• To express what a Collection looks like, it may be helpful to provide an example collection (/set/ordered..) in exampleValue. This is currently not possible, one can only see example Value for "leave nodes".
  It has to be discussed how this could be extended for Collections where instances have a simple Datatype and those where Collections have a complex datatype (both defined via elementCharacteristic and Entity).
• It is currently not possible to define an exampleValue for a complexEntity, however that may (also without usage in Collection) be a desirable thing to express not only exampleValue for its components, but also an exampleValue of the compound thing which may "typically" be composed in certain manners.

Candidates for solutions to extend SAMM, the SDK and AME shall be evaluated and after decision be documented in an ADR