[new feature] Search: update style, add new prop shape、label (#2788)

packages/search/demo/index.vue

@@ -24,6 +24,8 @@
         v-model="value"
         :placeholder="$t('placeholder')"
         show-action
+        shape="round"
+        :label="$t('label')"
         @search="onSearch"
       >
         <div
@@ -42,13 +44,15 @@ export default {
   i18n: {
     'zh-CN': {
       title2: '监听对应事件',
-      title3: '自定义行动按钮',
-      placeholder: '请输入搜索关键词'
+      title3: '高级用法',
+      placeholder: '请输入搜索关键词',
+      label: '收货地址'
     },
     'en-US': {
       title2: 'Listen to Events',
-      title3: 'Custom Button',
-      placeholder: 'Placeholder'
+      title3: 'Advanced Usage',
+      placeholder: 'Placeholder',
+      label: 'Address'
     }
   },