OZG-3086 Lizenzheader hinzugefügt

pluto-server/run_local.sh

pluto-server/sonar-project.properties

pluto-server/src/license/eupl/header.txt

pluto-server/src/license/eupl/license.txt

pluto-server/src/license/licenses.properties

.../main/java/de/itvsh/ozg/pluto/PlutoServerApplication.java

...zg/pluto/attached_item/GrpcVorgangAttachedItemMapper.java

...g/pluto/attached_item/GrpcVorgangAttachedItemService.java

...de/itvsh/ozg/pluto/attached_item/VorgangAttachedItem.java

.../pluto/attached_item/VorgangAttachedItemCreatedEvent.java

...to/attached_item/VorgangAttachedItemCustomRepository.java

...ttached_item/VorgangAttachedItemCustomRepositoryImpl.java

...pluto/attached_item/VorgangAttachedItemEventListener.java

...sh/ozg/pluto/attached_item/VorgangAttachedItemMapper.java

...zg/pluto/attached_item/VorgangAttachedItemRepository.java

...h/ozg/pluto/attached_item/VorgangAttachedItemService.java

.../pluto/attached_item/VorgangAttachedItemUpdatedEvent.java

...a/de/itvsh/ozg/pluto/clientattribute/ClientAttribute.java

...lientattribute/ClientAttributeAlreadyExistsException.java

...to/clientattribute/ClientAttributeHasValueConstraint.java