Merge pull request 'OZG-6949-refactoring' (#101) from OZG-6949-refactoring into master

...ozgcloud/antragsraum/common/AddressNotFoundException.java

...ozgcloud/antragsraum/common/AttachmentNotFoundAdvice.java

...a/de/ozgcloud/antragsraum/common/ExceptionController.java

...e/ozgcloud/antragsraum/common/GeneralExceptionAdvice.java

...ozgcloud/antragsraum/common/InvalidFileTypeException.java

...e/ozgcloud/antragsraum/common/NotAccessibleException.java

...ava/de/ozgcloud/antragsraum/common/NotFoundException.java

.../java/de/ozgcloud/antragsraum/common/RestClientUtils.java

...ava/de/ozgcloud/antragsraum/common/SendTimeoutAdvice.java

...va/de/ozgcloud/antragsraum/common/TechnicalException.java

...java/de/ozgcloud/antragsraum/common/VirusFoundAdvice.java

...a/de/ozgcloud/antragsraum/common/VirusFoundException.java

...va/de/ozgcloud/antragsraum/common/VirusScanException.java

.../antragsraum/common/logging/RepositoryAspectPointcut.java

...d/antragsraum/common/logging/RepositoryLoggingAspect.java

...n/java/de/ozgcloud/antragsraum/events/NachrichtEvent.java

.../de/ozgcloud/antragsraum/events/NachrichtEventMapper.java

...cloud/antragsraum/events/NachrichtEventRemoteService.java

...ozgcloud/antragsraum/events/NachrichtEventRestClient.java

...de/ozgcloud/antragsraum/events/NachrichtEventService.java