Add missing build preparation to gem publishing

Set assignee for ruby dependencies to Taucher2003

feat: add __typename property to return object in getValueFromType fo…

…r better type identification

Merge pull request #23 from code0-tech/feat/#22

Test cases with real sagittarius data

Merge pull request #21 from code0-tech/feat/#14

Missing Node variant on DataTypeVariant

Merge pull request #11 from code0-tech/feat/#6

Update to new sagittarius types and prepare release