Convert schema validation to ShEX or ShACL check.

[dosumis]

See pipline:
KB -> triplestore (with embargo filtering & slot for SHACL/SHEX validation step
https://github.com/VirtualFlyBrain/vfb-pipeline-collectdata/blob/master/process.sh

Which points to shacl file here: https://github.com/VirtualFlyBrain/vfb-pipeline-collectdata/blob/master/shacl/kb.shacl