collaboration.module.ts

Merge remote-tracking branch 'origin/ozg-6300-accordion-zusammenarbeit' into OZG-6302-AnfrageFormular

# Conflicts:
#	alfa-client/libs/collaboration/src/lib/collaboration-in-vorgang-container/collaboration-in-vorgang-container.component.html
#	alfa-client/libs/collaboration/src/lib/collaboration-in-vorgang-container/collaboration-in-vorgang-container.component.spec.ts
#	alfa-client/libs/collaboration/src/lib/collaboration.module.ts