Name: oidc-connection-definition
Type: request
Purpose: >
  Defines ("creates") a new OIDC connection.
Response: oidc-connection-details
Inherits: message
Elements:
  Signature: { required: true }
  From: { required: true }
  Oidc-Connection-Data:
    required: true
    type: object
    class: oidc_connection
    encryption_required: true
Rejection-Codes:
  21: Incomplete OIDC connection data
  22: OIDC base URL is invalid
  31: Sender is not authorized to define OIDC connections
  41: OIDC connection is already defined for this host
  91: Could not retrieve OIDC host endpoints