OZG-7092 [wip] do refactoring

...ver/src/main/java/de/ozgcloud/token/CheckErrorMapper.java

...ver/src/main/java/de/ozgcloud/token/CheckTokenResult.java

...c/main/java/de/ozgcloud/token/CheckTokenResultMapper.java

...rc/main/java/de/ozgcloud/token/TokenCheckGrpcService.java

...src/main/java/de/ozgcloud/token/TokenCheckProperties.java

...er/src/main/java/de/ozgcloud/token/TokenCheckService.java

...java/de/ozgcloud/token/saml/Saml2VerificationService.java

...c/main/java/de/ozgcloud/token/saml/SamlConfiguration.java

...main/java/de/ozgcloud/token/saml/SamlServiceRegistry.java

.../src/main/java/de/ozgcloud/token/saml/SamlTokenUtils.java

...src/test/java/de/ozgcloud/token/CheckErrorMapperTest.java

...t/java/de/ozgcloud/token/CheckTokenResultTestFactory.java

.../de/ozgcloud/token/GrpcCheckTokenResponseTestFactory.java

...est/java/de/ozgcloud/token/TokenCheckApplicationTest.java

...est/java/de/ozgcloud/token/TokenCheckGrpcServiceTest.java

...src/test/java/de/ozgcloud/token/TokenCheckMapperTest.java

.../test/java/de/ozgcloud/token/TokenCheckServiceITCase.java

...rc/test/java/de/ozgcloud/token/TokenCheckServiceTest.java

...t/java/de/ozgcloud/token/TokenCheckTestConfiguration.java

...va/de/ozgcloud/token/saml/Saml2DecryptionServiceTest.java