Missing choice parameters

[panva]

As per https://lists.openid.net/pipermail/openid-specs-ab/2025-April/010753.html the following parameters are currently missing.

From RFC 9701

• introspection_signing_alg_values_supported
  • covering the single value metadata introspection_signed_response_alg
• introspection_encryption_alg_values_supported
  • covering the single value metadata introspection_encrypted_response_alg
• introspection_encryption_enc_values_supported
  • covering the single value metadata introspection_encrypted_response_enc

From JARM

• authorization_signing_alg_values_supported
  • covering the single value metadata authorization_signed_response_alg
• authorization_encryption_alg_values_supported
  • covering the single value metadata authorization_encrypted_response_alg
• authorization_encryption_enc_values_supported
  • covering the single value metadata authorization_encrypted_response_enc

From CIBA

• backchannel_authentication_request_signing_alg_values_supported
  • covering the single value metadata backchannel_authentication_request_signing_alg