add multi language

docs/zh/index.md

@@ -0,0 +1,18 @@
+---
+# https://vitepress.dev/reference/default-theme-home-page
+layout: home
+
+hero:
+  name: "Love Live! 学园偶像祭2 MIRACLE LIVE!"
+  text: "用户指南和服务器指南"
+  tagline: 
+  actions:
+    - theme: brand
+      text: 用户指南
+      link: /docs/zh/user_guide/client_docs
+    - theme: alt
+      text: 服务器指南
+      link: /docs/zh/dev_guide/introduction
+
+
+