SSDM-13637: Added Metadata field to Sample and SampleType

.../ethz/sis/openbis/generic/asapi/v3/dto/sample/Sample.java

...z/sis/openbis/generic/asapi/v3/dto/sample/SampleType.java

...is/generic/asapi/v3/dto/sample/create/SampleCreation.java

...eneric/asapi/v3/dto/sample/create/SampleTypeCreation.java

.../generic/asapi/v3/dto/sample/update/SampleTypeUpdate.java

...nbis/generic/asapi/v3/dto/sample/update/SampleUpdate.java

api-openbis-javascript/src/v3/as/dto/sample/Sample.js

api-openbis-javascript/src/v3/as/dto/sample/SampleType.js

...-javascript/src/v3/as/dto/sample/create/SampleCreation.js

...ascript/src/v3/as/dto/sample/create/SampleTypeCreation.js

...avascript/src/v3/as/dto/sample/update/SampleTypeUpdate.js

...is-javascript/src/v3/as/dto/sample/update/SampleUpdate.js

...server/asapi/v3/executor/sample/CreateSampleExecutor.java

...r/asapi/v3/executor/sample/CreateSampleTypesExecutor.java

...server/asapi/v3/executor/sample/UpdateSampleExecutor.java

...er/asapi/v3/executor/sample/UpdateSampleTypeExecutor.java

...c/server/asapi/v3/translator/sample/SampleBaseRecord.java

...eneric/server/asapi/v3/translator/sample/SampleQuery.java

...c/server/asapi/v3/translator/sample/SampleTranslator.java

...rver/asapi/v3/translator/sample/SampleTypeBaseRecord.java