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/LayerManager.js

@@ -1753,7 +1753,7 @@ export class LayerManager {
    * 更新背景图层颜色
    * @param {string} backgroundColor 背景颜色
    */
-  updateBackgroundColor(backgroundColor) {
+  updateBackgroundColor(backgroundColor, options = {}) {
     const backgroundLayer = this.layers.value.find(
       (layer) => layer.isBackground
     );
@@ -1768,10 +1768,14 @@ export class LayerManager {
       canvas: this.canvas,
       layers: this.layers,
       canvasManager: this.canvasManager,
+      layerManger: this,
       backgroundColor,
       backgroundColorValue: this.backgroundColor,
+      oldColor: options.oldColor,
     });
 
+    command.undoable = isBoolean(options.undoable) ? options.undoable : true; // 设置为可撤销
+
     // 执行命令
     if (this.commandManager) {
       this.commandManager.execute(command);