Add support for claim-specific display properties

[nanderstabel]

Description

We've implemented some Connection- and Credential level display properties, but not yet claim-specific display properties (inside a Credential). By implementing this we can support more/better issuer defined display logic for Credentials.

Claim-specific display is defined here: https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html#appendix-A.1.1.2-3.1.2.2.2.3.1

Motivation

Better user experience.
Better support for Issuer defined display logic.

Resources

https://openid.net/specs/openid-4-verifiable-credential-issuance-1_0.html#appendix-A.1.1.2-3.1.2.2.2.3.1

To-do List

• Support Claim-specific display properties