feat: space opus

Closes #833

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/models/space_opus/item.dart

@@ -0,0 +1,34 @@
+import 'package:PiliPlus/models/space_opus/cover.dart';
+import 'package:PiliPlus/models/space_opus/stat.dart';
+
+class SpaceOpusItemModel {
+  String? content;
+  String? jumpUrl;
+  String? opusId;
+  Stat? stat;
+  Cover? cover;
+
+  SpaceOpusItemModel(
+      {this.content, this.jumpUrl, this.opusId, this.stat, this.cover});
+
+  factory SpaceOpusItemModel.fromJson(Map<String, dynamic> json) =>
+      SpaceOpusItemModel(
+        content: json['content'] as String?,
+        jumpUrl: json['jump_url'] as String?,
+        opusId: json['opus_id'] as String?,
+        stat: json['stat'] == null
+            ? null
+            : Stat.fromJson(json['stat'] as Map<String, dynamic>),
+        cover: json['cover'] == null
+            ? null
+            : Cover.fromJson(json['cover'] as Map<String, dynamic>),
+      );
+
+  Map<String, dynamic> toJson() => {
+        'content': content,
+        'jump_url': jumpUrl,
+        'opus_id': opusId,
+        'stat': stat?.toJson(),
+        'cover': cover?.toJson(),
+      };
+}