OZG-6949 Refactoring and formatting

.../java/de/ozgcloud/antragsraum/AntragsRaumApplication.java

...in/java/de/ozgcloud/antragsraum/OpenApiConfiguration.java

server/src/main/java/de/ozgcloud/antragsraum/Root.java

...src/main/java/de/ozgcloud/antragsraum/RootController.java

...n/java/de/ozgcloud/antragsraum/SecurityConfiguration.java

...ava/de/ozgcloud/antragsraum/SwaggerCorsConfiguration.java

...c/main/java/de/ozgcloud/antragsraum/WebConfiguration.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

...antragsraum/security/AntragsraumLogoutSuccessHandler.java

.../ozgcloud/antragsraum/security/AntragsraumProperties.java

.../main/java/de/ozgcloud/antragsraum/security/AuthCode.java

...gcloud/antragsraum/security/AuthenticationController.java

...e/ozgcloud/antragsraum/security/AuthenticationHelper.java

.../de/ozgcloud/antragsraum/security/BayernIdProperties.java

...ozgcloud/antragsraum/security/BayernIdSaml2Extension.java

...in/java/de/ozgcloud/antragsraum/security/DefaultRole.java