Stunner - Create Marshaller tests for Compensation Intermediate events

Create Marshaller tests for Compensation Intermediate (catching and throwing) events.

Relating to bpmn specification [1], catching intermediate events should be only boundary.

Test cases, all with empty and filled properties:

• top level boundary catching events
• sub-process level boundary catching events
• top level throwing events
• sub-process level throwing events

[1] https://www.omg.org/bpmn/