Verifier metadata per-format fields and numeric COSE identifiers

Requirement as recorded in the ProtocolSoup registry

Verifier metadata uses the Final per-format fields and numeric COSE algorithm identifiers for mso_mdoc.

Self-test verdict

Tests

• TestRequestObjectContainsClientMetadataWithVPFormats

  ./internal/protocols/oid4vp

  Pass

Implementation

• backend/internal/protocols/oid4vp/handlers.go

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