docs: update README with restructuring information (#376)

Co-authored-by: louistsang <zengjunkun@eolink.com>

README.md

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   <a href="https://discord.gg/W3uk39zJCR"><img src="https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true" alt="Chat"></a>
 </p>
 
+## 🛠️ 小更新，大改变：Postcat 正在重构中！ 🚀
+
+嘿，Postcat 的朋友们！
+
+只是想快速告诉大家，我们的项目现在正处在一次激动人心的重构旅程中。这并不意味着 Postcat 没有得到维护，恰恰相反，我们正在给它注入新的活力！
+
+在这个阶段，可能会有些静悄悄的，但请相信，我们在幕后正忙得不可开交。我们致力于让 Postcat 变得更酷、更易用，只是需要一点时间来打磨和完善。
+
+所以，请继续关注，不久的将来，你们会见到一个焕然一新的 Postcat。你的支持和耐心是我们最宝贵的动力！
+
+敬请期待，更多精彩即将来临！
+
 ## 概述
 
 **Postcat** 是一个强大的开源、免费的、跨平台（Windows、Mac、Linux、Browsers...）的 **API 开发测试工具**，支持 REST、Websocket 等协议（即将支持 GraphQL、gRPC、TCP、UDP），帮助你加速完成 API 开发和测试工作。它非常适合中小团队及个人使用。

wiki/README.en.md

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   <a href="https://discord.gg/W3uk39zJCR"><img src="https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true" alt="Chat"></a>
 </p>
 
+## `🛠️ A Little Update, A Big Transformation: Postcat is Undergoing a Revamp! 🚀
+
+Hey there, Postcat friends!
+
+Just a quick shout-out to let you all know that our project is currently on an exciting journey of restructuring. It's not that Postcat is unattended; in fact, we're actively injecting new energy into it!
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+Things might seem a bit quiet for now, but rest assured, we're busy behind the scenes. We're committed to making Postcat cooler and more user-friendly - it just takes a bit of time to polish and perfect.
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+So, stay tuned! Soon, you'll be meeting a revamped and rejuvenated Postcat. Your support and patience mean the world to us!
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+Exciting updates are on the horizon, stay tuned!`
+
 ![Postcat UI](https://data.eolink.com/ADAR6cL7e479c785ec305f5c60de95ce1a2a88da408039b)
 
 Postcat is a powerful open source, cross-platform (Windows, Mac, Linux, Browsers...) **API development and testing tool** that supports REST, Websocket and other protocols (soon to support GraphQL, gRPC, TCP, UDP), helping you speed up the completion of API Development and testing work.