升级Vue3，iView替换ElementPlus

- 删除babel配置、更新依赖与入口初始化
- 全量替换UI组件、样式适配，新增迁移文档与标签/过滤器自动化替换脚本

buyer/src/components/map/index.vue

@@ -5,7 +5,7 @@
     <div id="map-container"></div>
 
     <div class="search-con">
-      <Input placeholder="输入关键字搜索" id="input-map" v-model="mapSearch" />
+      <el-input placeholder="输入关键字搜索" id="input-map" v-model="mapSearch" />
       <ul>
         <li v-for="(tip, index) in tips" :key="index" @click="selectAddr(tip.location)">
           <p>{{ tip.name }}</p>
@@ -13,11 +13,9 @@
         </li>
       </ul>
     </div>
-    <div slot="footer" class="footer">
-
-      <Button type="primary" :loading="loading" @click="ok">确定</Button>
+    <div class="footer">
+      <el-button type="primary" :loading="loading" @click="ok">确定</el-button>
     </div>
-
   </div>
 </template>
 <script>