IATP: attach the entire VerifiableCredential to the ClaimToken

[paullatzelsperger]

Feature Request

When we create the ClaimToken based on a set of VerifiableCredentials we should attach the entire VC instead of
only attaching the credentialSubject.

Which Areas Would Be Affected?

IdentityAndTrustService.java

Why Is the Feature Desired?

Some evaluation functions may target fields other than the credentialSubject, e.g. the credential type, or have some custom logic like "credential must have a remaining validity period of 10 days" etc.

Solution Proposal

the ClaimToken contains an entry keyed vc that contains all verifiable credentials in a list:

"vc" : [
  {
    "id": <ID>,
    "name": <NAME>,
    "types": [<type1>, <type2>],
    "credentialSubject": {
      "id": <subjectId>,
      "claim1": "value1",
      "claim2": "value2"
    }
  },
  ...
] 

Ideally, this is pluggable.