[SLO] Add OIDCDiscovery object

(cherry picked from commit 69fa48d9138ee4c555e88e49970619dfa9c561ce)

model/lib/model.dart

@@ -67,6 +67,7 @@ export 'oidc/oidc_configuration.dart';
 export 'oidc/request/oidc_request.dart';
 export 'oidc/response/oidc_link_dto.dart';
 // OIDC
+export 'oidc/response/oidc_discovery_response.dart';
 export 'oidc/response/oidc_response.dart';
 export 'oidc/token.dart';
 export 'oidc/token_id.dart';

model/lib/oidc/response/oidc_discovery_response.dart

@@ -0,0 +1,21 @@
+import 'package:equatable/equatable.dart';
+import 'package:json_annotation/json_annotation.dart';
+
+part 'oidc_discovery_response.g.dart';
+
+@JsonSerializable(explicitToJson: true, includeIfNull: false)
+class OIDCDiscoveryResponse with EquatableMixin {
+
+  final String? authorizationEndpoint;
+  final String? tokenEndpoint;
+  final String? endSessionEndpoint;
+
+  OIDCDiscoveryResponse(this.authorizationEndpoint, this.tokenEndpoint, this.endSessionEndpoint);
+
+  factory OIDCDiscoveryResponse.fromJson(Map<String, dynamic> json) => _$OIDCDiscoveryResponseFromJson(json);
+
+  Map<String, dynamic> toJson() => _$OIDCDiscoveryResponseToJson(this);
+
+  @override
+  List<Object?> get props => [authorizationEndpoint, tokenEndpoint, endSessionEndpoint];
+}