feat：参照研听的基础工程

lib/features/news/data/news_models.dart

@@ -0,0 +1,21 @@
+import '../../../common/domain/metal_type.dart';
+
+class NewsItem {
+  const NewsItem({
+    required this.id,
+    required this.metal,
+    required this.title,
+    required this.source,
+    required this.publishedAt,
+    required this.summary,
+    required this.body,
+  });
+
+  final String id;
+  final MetalType metal;
+  final String title;
+  final String source;
+  final DateTime publishedAt;
+  final String summary;
+  final List<String> body;
+}