feat: GUI 配置支持添加和减少 LED。

src/configurator/models/picker-configuration.ts

@@ -1,6 +1,8 @@
 import { DisplayConfig } from './display-config';
 
 export class PickerConfiguration {
-  config_version!: number;
-  display_configs!: DisplayConfig[];
+  constructor(
+    public display_configs: DisplayConfig[] = [],
+    public config_version: number = 1,
+  ) {}
 }