Add signing of Identifiables#523

sebbader-sap merged 16 commits intoadmin-shell-io:IDTA-01002-3-2_workingadmin-shell-io/aas-specs-api:IDTA-01002-3-2_workingfrom

aorzelskiGH:aorzelski/jwsaorzelskiGH/aas-specs-api:aorzelski/jwsCopy head branch name to clipboard