Compliance testing

[nissimsan]

Issue Description

Add test harness for implementers to prove compliance

[nissimsan]

As discussed on the meeting today this will be a JSON schema validation.

[ashleythedeveloper]

MVP - UNTP/extensions- https://uncefact.github.io/tests-untp/docs/test-suites/semantic-interoperability/

[PatStLouis]

@ashleythedeveloper this is great, I was able to get this up and running without issue. The vcdm 2.0 does have a json schema available, while deferring to the vc 2.0 test suite makes sense, I believe the untp should also test every credential against this schema as a quick way to ensure implementers credentials are conformant with vcdm. the vc test suite won't allow you to just test an arbitrary credential, instead its used to test issuing/verifying software, not credentials.

Here's the link:
https://w3c.github.io/vc-data-model/schema/verifiable-credential/verifiable-credential-schema.json

This could be added somewhere in there. Currently its possible to be untp conformant and not vcdm conformant, which shouldn't be the case.