`x509_san_dns` client_id ETSI trust list verification

[patatoid]

Summary

wwWallet frontend would benefit from the trust list verification to assert issuer and verifier trust.

Problem statement

May it be part of the backend, x509_san_dns client ids may be checked against the list to ensure presentation and trustful credential exposure.

Acceptance criteria

• x509_san_dns client ids are verified against a configured ETSI trust list at presentation

Additional context

• https://openid.net/specs/openid-4-verifiable-presentations-1_0.html#section-5.9.3-3.5.1

[leifj]

Implementation plan: Update the ETSI TS registry to support x509_san_dns verification.