Add "Saga Reader" (#1651)

This PR adds saga-reader, an AI-driven think tank-style reader that automatically retrieves information from the internet based on user-specified topics and preferences. It uses cloud or local large models to summarize and provide guidance, and it includes an AI-driven interactive companion reading function, allowing you to discuss and exchange ideas with AI about the content you've read.

Thanks for taking your time!

https://github.com/sopaco/saga-reader
Saga Reader is an AI-driven think tank-style reader that automatically retrieves information from the internet based on user-specified topics and preferences. It uses cloud or local large models to summarize and provide guidance, and it includes an AI-driven interactive companion reading function, allowing you to discuss and exchange ideas with AI about the content you've read.

Saga Reader is completely free and open-source, meaning all data is securely stored on your own computer and is not controlled by third-party service providers. Additionally, you can manage your subscription keywords based on your interests and preferences without being disturbed by advertisements and commercialized content.

Author: sopaco

README-zh.md

@@ -642,6 +642,7 @@ Awesome Mac
 * [NetNewsWire](https://ranchero.com/netnewswire/) - 免费的 RSS 阅读器。[![Open-Source Software][OSS Icon]](https://github.com/brentsimmons/NetNewsWire) ![Freeware][Freeware Icon]
 * [ReadKit](http://readkitapp.com/) - 书签 RSS 管理客户端。
 * [Reeder 5](http://reederapp.com/) - RSS 服务订阅 [![App Store][app-store Icon]](https://apps.apple.com/cn/app/reeder-5/id1529448980?mt=12)
+* [Saga Reader](https://github.com/sopaco/saga-reader) - 一款由AI驱动的超快速、超轻量级互联网阅读器。支持搜索引擎信息和RSS的获取。[![Open-Source Software][OSS Icon]](https://github.com/brentsimmons/NetNewsWire) ![Freeware][Freeware Icon]
 * [Vienna](http://viennarss.github.io/) - RSS/Atom 新闻阅读客户端。[![Open-Source Software][OSS Icon]](https://github.com/ViennaRSS/vienna-rss) ![Freeware][Freeware Icon]
 
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