user_hint in OID4VCI lacks corresponding parameter in OID4VP

[OIDF-automation]

Imported from AB/Connect bitbucket: https://bitbucket.org/openid/connect/issues/1795

Original Reporter: tlodderstedt

OID4VCI defines the user_hint parameter. It states

user_hint: OPTIONAL. JSON string containing an opaque user hint the Wallet MAY use in subsequent callbacks to optimize the user's experience. RECOMMENDED in Dynamic Credential Request.

However, it is not clear to me how the issuer shall pass this hint to the Wallet in a OID4VP request.

There is also a note “Note to the editors: need to sort out Credential Issuer's client_id with Wallet and potentially add example with wallet_issuer and user_hint“

[OIDF-automation]

Imported from AB/Connect bitbucket - Original Commenter: KristinaYasuda

how is user_hint useful to the wallet when received from the issuer in an OpenID4VP authz req?

(Dynamic Credential Request should probably be called Dynamic Presentation Request..)

[Sakurann]

related to #145

[Sakurann]

closing as duplicate of #145