docs: add readme for schema and volar

Author: KeJunMao

README.md

@@ -17,7 +17,7 @@
 
 - [pages-json-schema](./packages/schema/)
 
-  为 `pages.json` 提供 schema
+  为 uni-app 的 `pages.json` 提供 schema
 
 
 ## 安装

packages/schema/README.md

@@ -0,0 +1,23 @@
+# @uni-helper/pages-json-schema
+
+为 uni-app 的 `pages.json` 提供 schema
+
+## 安装
+
+```bash
+pnpm add @uni-helper/pages-json-schema
+```
+
+## 用法
+
+```js
+import PagesSchema from '@uni-helper/pages-json-schema'
+
+console.log(PagesSchema)
+
+// {
+//   "$ref": "#/definitions/PagesConfig",
+//   "$schema": "http://json-schema.org/draft-07/schema#",
+//   "definitions": {...}
+// }
+```

packages/volar/README.md

@@ -0,0 +1,22 @@
+# @uni-helper/volar-plugin-uni-pages
+
+为 `<route>` 块 提供 IntelliSense
+
+## 安装
+
+```bash
+pnpm add -D @uni-helper/volar-plugin-uni-pages
+```
+
+## 用法
+
+```js
+// volar.config.js
+const volarPluginUniPages = require('@uni-helper/volar-plugin-uni-pages')
+
+module.exports = {
+  plugins: [
+    volarPluginUniPages(),
+  ],
+}
+```