feat: 添加虚拟表格示例 (#1007)

* feat: 添加虚拟表格示例

src/views/table/high/drag/column/index.vue

@@ -0,0 +1,16 @@
+<script setup lang="ts">
+import { useColumns } from "./columns";
+
+const { columns, dataList, columnsDrag } = useColumns();
+</script>
+
+<template>
+  <div class="flex">
+    <el-scrollbar height="700px">
+      <code>
+        <pre class="w-[700px]"> {{ columnsDrag }}</pre>
+      </code>
+    </el-scrollbar>
+    <pure-table row-key="id" :data="dataList" :columns="columns" />
+  </div>
+</template>