fix: 导出 install 模块以便于使用 (#362)

Co-authored-by: 御风 <18012261618@126.com>

Author: Baymax808

packages/vue2/src/utils/index.js

@@ -24,3 +24,5 @@ export default {
   dataSourceUtils,
   createErrorLayout,
 };
+
+export * from './install';