#54 new: grouped snippet & tab snippet

lib/data/model/server/snippet.dart

@@ -8,16 +8,20 @@ class Snippet {
   late String name;
   @HiveField(1)
   late String script;
-  Snippet(this.name, this.script);
+  @HiveField(2)
+  List<String>? tags;
+  Snippet(this.name, this.script, {this.tags});
 
   Snippet.fromJson(Map<String, dynamic> json) {
     name = json['name'].toString();
     script = json['script'].toString();
+    tags = json['tags'].cast<String>();
   }
   Map<String, dynamic> toJson() {
     final data = <String, dynamic>{};
     data['name'] = name;
     data['script'] = script;
+    data['tags'] = tags;
     return data;
   }
 }