perf: 连接 RDP 协议会话时，高级选项支持 session bpp:i 参数配置；默认 32； (#12319)

Co-authored-by: feng <1304903146@qq.com>

apps/users/serializers/preference/luna.py

@@ -5,7 +5,7 @@ from rest_framework import serializers
 
 from users.const import (
     RDPResolution, RDPSmartSize, KeyboardLayout,
-    RDPClientOption, AppletConnectionMethod
+    RDPClientOption, AppletConnectionMethod, RDPColorQuality,
 )
 
 
@@ -40,6 +40,10 @@ class GraphicsSerializer(serializers.Serializer):
         choices=RDPClientOption.choices, default={RDPClientOption.FULL_SCREEN},
         label=_('RDP client option'), required=False
     )
+    rdp_color_quality = serializers.ChoiceField(
+        choices=RDPColorQuality.choices, default=RDPColorQuality.HIGH,
+        label=_('RDP color quality'), required=False
+    )
     rdp_smart_size = serializers.ChoiceField(
         RDPSmartSize.choices, default=RDPSmartSize.DISABLE,
         required=False, label=_('Rdp smart size'),