OZG-2626,OZG-2892 add subproject with protobuf

...op/user/common/errorhandling/KeycloakClientException.java

...er/common/errorhandling/KeycloakUnavailableException.java

.../kop/user/common/errorhandling/LockCreationException.java

...vsh/kop/user/common/errorhandling/TechnicalException.java

.../kop/user/common/errorhandling/UserNotFoundException.java

...ava/de/itvsh/kop/user/keycloak/KeycloakApiProperties.java

...n/java/de/itvsh/kop/user/keycloak/KeycloakApiService.java

...ain/java/de/itvsh/kop/user/keycloak/KeycloakProvider.java

...de/itvsh/kop/user/keycloak/KeycloakUserRemoteService.java

user-manager/src/main/java/de/itvsh/kop/user/sync/Lock.java

.../src/main/java/de/itvsh/kop/user/sync/LockRepository.java

...ger/src/main/java/de/itvsh/kop/user/sync/LockService.java

...r/src/main/java/de/itvsh/kop/user/sync/SyncScheduler.java

...ger/src/main/java/de/itvsh/kop/user/sync/SyncService.java

...-manager/src/main/resources/META-INF/resources/index.html

user-manager/src/main/resources/application-dev.yaml

user-manager/src/main/resources/application-local.yaml

user-manager/src/main/resources/application-remotekc.yaml

user-manager/src/main/resources/application.yaml

...ava/de/itvsh/kop/user/GroupRepresentationTestFactory.java