perf: 支持持久化设置个人终端主题

apps/users/serializers/preference/koko.py

@@ -9,6 +9,8 @@ class BasicSerializer(serializers.Serializer):
         FileNameConflictResolution.choices, default=FileNameConflictResolution.REPLACE,
         required=False, label=_('File name conflict resolution')
     )
+    terminal_theme_name = serializers.CharField(
+        max_length=128, required=False, default='Default', label=_('Terminal theme name'))
 
 
 class KokoSerializer(serializers.Serializer):