OZG-4624 rename CRDs and java classes

doc/ServiceAccount/serviceaccount_keycloak_read.yaml

doc/ServiceAccount/serviceaccount_keycloak_secrets_read.yaml

doc/ServiceAccount/serviceaccount_keycloak_write.yaml

doc/crds/operator.ozgcloud.de_OzgKeycloakClient.yaml

doc/crds/operator.ozgcloud.de_OzgKeycloakGroup.yaml

doc/crds/operator.ozgcloud.de_OzgKeycloakRealms.yaml

doc/crds/operator.ozgcloud.de_OzgKeycloakUser.yaml

...emplates/crds/operator.ozgcloud.de_OzgKeycloakClient.yaml

...templates/crds/operator.ozgcloud.de_OzgKeycloakGroup.yaml

...emplates/crds/operator.ozgcloud.de_OzgKeycloakRealms.yaml

.../templates/crds/operator.ozgcloud.de_OzgKeycloakUser.yaml

...gcloud/operator/keycloak/client/KeycloakClientMapper.java

...or/keycloak/client/KeycloakClientPreconditionService.java

...ud/operator/keycloak/client/KeycloakClientReconciler.java

...cloud/operator/keycloak/client/KeycloakClientService.java

...loud/operator/keycloak/client/OzgCloudKeycloakClient.java

.../operator/keycloak/client/OzgCloudKeycloakClientSpec.java

...perator/keycloak/client/OzgCloudKeycloakClientStatus.java

...ozgcloud/operator/keycloak/group/KeycloakGroupMapper.java

...ator/keycloak/group/KeycloakGroupPreconditionService.java