SSDM-2601: introduce FullSampleIdentifier with tests.

...c/server/api/v3/executor/sample/FullSampleIdentifier.java

.../api/v3/executor/sample/ListSampleTechIdByIdentifier.java

.../server/api/v3/executor/sample/SampleIdentifierParts.java

...ver/api/v3/translator/entity/sample/SampleBaseRecord.java

...c/server/api/v3/translator/entity/sample/SampleQuery.java

...ver/api/v3/translator/entity/sample/SampleTranslator.java

...rver/api/v3/executor/sample/FullSampleIdentifierTest.java

...ethz/sis/openbis/systemtest/api/v3/ProjectSampleTest.java

...generic/shared/api/v3/dto/id/sample/SampleIdentifier.java