refactor(workbench): 添加 vue-echarts 组件导入

- 在 workbench 组件中引入 vCharts 组件，用于数据可视化

src/views/workbench/index.vue

@@ -156,6 +156,7 @@
 </template>
 
 <script lang="ts" setup name="workbench">
+import vCharts from 'vue-echarts'
 import {getWorkbench} from '@/api/app'
 import {SwitchButton} from '@element-plus/icons-vue'
 import menu_admin from './image/menu_admin.png'