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/Entities/Chessboard.tscn

@@ -12,7 +12,11 @@ visible = false
 script = ExtResource("3_26g24")
 
 [node name="Layer0" type="TileMapLayer" parent="."]
-use_parent_material = true
+show_behind_parent = true
 position = Vector2(-8, 184)
 tile_map_data = PackedByteArray("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")
 tile_set = ExtResource("1_ws3cq")
+collision_enabled = false
+collision_visibility_mode = 2
+navigation_enabled = false
+navigation_visibility_mode = 2