feat: 实时更新背景色+选取剪切+选取删除初步开发完成

src/component/Canvas/CanvasEditor/managers/selection/SelectionManager.js

@@ -1,10 +1,8 @@
 import { fabric } from "fabric-with-all";
 import { generateId } from "../../utils/helper";
 import { OperationType } from "../../utils/layerHelper";
-import {
-  ClearSelectionCommand,
-  CreateSelectionCommand,
-} from "../../commands/SelectionCommands";
+import { CreateSelectionCommand } from "../../commands/SelectionCommands";
+import { ClearSelectionCommand } from "../../commands/LassoCutoutCommand";
 
 /**
  * 选区管理器