feat: 支持开启暗黑模式

ruoyi-fastapi-frontend/src/main.js

@@ -4,6 +4,7 @@ import Cookies from 'js-cookie'
 
 import ElementPlus from 'element-plus'
 import 'element-plus/dist/index.css'
+import 'element-plus/theme-chalk/dark/css-vars.css'
 import locale from 'element-plus/es/locale/lang/zh-cn'
 
 import '@/assets/styles/index.scss' // global css
@@ -39,8 +40,6 @@ import FileUpload from "@/components/FileUpload"
 import ImageUpload from "@/components/ImageUpload"
 // 图片预览组件
 import ImagePreview from "@/components/ImagePreview"
-// 自定义树选择组件
-import TreeSelect from '@/components/TreeSelect'
 // 字典标签组件
 import DictTag from '@/components/DictTag'
 
@@ -59,7 +58,6 @@ app.config.globalProperties.selectDictLabels = selectDictLabels
 // 全局组件挂载
 app.component('DictTag', DictTag)
 app.component('Pagination', Pagination)
-app.component('TreeSelect', TreeSelect)
 app.component('FileUpload', FileUpload)
 app.component('ImageUpload', ImageUpload)
 app.component('ImagePreview', ImagePreview)