add multi language

.vitepress/config/index.ts

@@ -0,0 +1,12 @@
+import {defineConfig} from 'vitepress'
+import {en} from './en'
+import {zh} from './zh'
+import {shared} from "./shared";
+
+export default defineConfig({
+    ...shared,
+    locales: {
+        root: {label: "简体中文", ...zh},
+        en: {label: 'English', link: '/docs/en/', ...en}
+    }
+})