feat(重构): 重构棋盘和棋子的逻辑

- 重构了 ChessBoard 和 ChessPiece 类的逻辑
- 添加了新版本的 ChineseChess 库
- 删除了旧版本的 VirtualBoard 和 VirtualPiece 类
- 更新了相关的场景和脚本

Scenes/Setting.tscn

@@ -152,6 +152,13 @@ size_flags_horizontal = 3
 disabled = true
 text = "GetUserDataDir"
 
+[node name="MarginContainer8" type="MarginContainer" parent="BoxContainer"]
+layout_mode = 2
+
+[node name="ColorPickerButton" type="ColorPickerButton" parent="BoxContainer/MarginContainer8"]
+layout_mode = 2
+text = "Trace Color"
+
 [connection signal="pressed" from="BoxContainer/MarginContainer/Back" to="." method="OnBack"]
 [connection signal="pressed" from="BoxContainer/MarginContainer7/Button" to="." method="OnSave"]
 [connection signal="text_changed" from="BoxContainer/MarginContainer2/Server/LineEdit" to="." method="OnServerUrlChanged"]