docs: add example store with Immer to README

Author: ZingerLittleBee

README.md

@@ -110,6 +110,11 @@ Zustand is configured with:
 - **Tauri Store persistence** for data that survives app restarts
 - **TypeScript support** for type-safe stores
 
+Example store with Immer:
+```bash
+src/store/immer/immer-store.ts
+```
+
 Example store with persistence:
 ```typescript
 import { create } from 'zustand'

README.zh-CN.md

@@ -110,6 +110,11 @@ Zustand 配置包含：
 - **Tauri Store 持久化** 用于应用重启后保存的数据
 - **TypeScript 支持** 用于类型安全的状态管理
 
+immer 示例：
+```bash
+src/store/immer/immer-store.ts
+```
+
 带持久化的示例状态管理：
 ```typescript
 import { create } from 'zustand'