feat(oauth): Issue-691

lib/features/settings/models/oauth_attach_request.dart

@@ -0,0 +1,17 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'oauth_attach_request.freezed.dart';
+part 'oauth_attach_request.g.dart';
+
+@freezed
+abstract class OAuthAttachRequest with _$OAuthAttachRequest {
+  const factory OAuthAttachRequest({
+    required String provider,
+    @JsonKey(name: 'client_id') String? clientId,
+    @JsonKey(name: 'access_token') required String accessToken,
+    @JsonKey(name: 'refresh_token') required String refreshToken,
+  }) = _OAuthAttachRequest;
+
+  factory OAuthAttachRequest.fromJson(Map<String, dynamic> json) => _$OAuthAttachRequestFromJson(json);
+}
+