Add bookmark request

lib/models/data/post_bookmark.dart

@@ -0,0 +1,29 @@
+class PostBookmark {
+  final String url;
+  final String title;
+  final String description;
+  final bool isArchived;
+  final bool unread;
+  final bool shared;
+  final List<String> tagNames;
+
+  const PostBookmark({
+    required this.url,
+    required this.title,
+    required this.description,
+    required this.isArchived,
+    required this.unread,
+    required this.shared,
+    required this.tagNames,
+  });
+
+  Map<String, dynamic> toJson() => {
+        "url": url,
+        "title": title,
+        "description": description,
+        "isArchived": isArchived,
+        "unread": unread,
+        "shared": shared,
+        "tagNames": tagNames,
+      };
+}