docs(readme): add warning about upcoming V2 version and link to plan list

Author: honghuangdc

README.en_US.md

@@ -22,6 +22,9 @@
 > [!NOTE]
 > The `SoybeanAdmin` quick start series videos have been uploaded to [Bilibili](https://www.bilibili.com/video/BV1YKdRYXELC) Go online [click here](https://www.bilibili.com/video/BV1YKdRYXELC) Go check it out
 
+> [!WARNING]
+> `SoybeanAdmin` is planning to develop a `V2` version, see [plan list](https://github.com/soybeanjs/soybean-admin/issues/767)
+
 ## Introduction
 
 [`SoybeanAdmin`](https://github.com/soybeanjs/soybean-admin) is a clean, elegant, beautiful and powerful admin template, based on the latest front-end technology stack, including Vue3, Vite6, TypeScript, Pinia and UnoCSS. It has built-in rich theme configuration and components, strict code specifications, and an automated file routing system. In addition, it also uses the online mock data solution based on ApiFox. `SoybeanAdmin` provides you with a one-stop admin solution, no additional configuration, and out of the box. It is also a best practice for learning cutting-edge technologies quickly.

README.md

@@ -21,6 +21,9 @@
 > [!NOTE]
 > `SoybeanAdmin` 快速上手系列视频已在 [Bilibili](https://www.bilibili.com/video/BV1YKdRYXELC) 上线 [点击这里](https://www.bilibili.com/video/BV1YKdRYXELC) 前往查看
 
+> [!WARNING]
+> `SoybeanAdmin` 正在计划开发 `V2` 版本，详情见[计划清单](https://github.com/soybeanjs/soybean-admin/issues/767)
+
 ## 简介
 
 [`SoybeanAdmin`](https://github.com/soybeanjs/soybean-admin) 是一个清新优雅、高颜值且功能强大的后台管理模板，基于最新的前端技术栈，包括 Vue3, Vite6, TypeScript, Pinia 和 UnoCSS。它内置了丰富的主题配置和组件，代码规范严谨，实现了自动化的文件路由系统。此外，它还采用了基于 ApiFox 的在线Mock数据方案。`SoybeanAdmin` 为您提供了一站式的后台管理解决方案，无需额外配置，开箱即用。同样是一个快速学习前沿技术的最佳实践。