More section definition information in section metadata
Currently, we only have a list of qualified names for all section definitions used in an archive stored in metadata.sections. For issues such as #1020 (closed) and #1181, we need more complex data.
- add a new sub-section called
metadata.section_defs(we deprecate the oldmetadata.sectionsafter a transition period) - these sub section should contain keys for
- definition as qualified name
- the hash based definition id
- the qualified name of all compatible definitions (i.e. the definition itself and its inherited classes)
- all these should be keyword indexed in elastic search
This will be a prerequisite for putting schemas into bundles (#1181)