docs: add maaframework-skills to community projects (#1279)

Ref: #1273

## Summary by Sourcery

文档：
- 将 maaframework-skills 添加到与 MaaFramework 相关的社区项目列表中，并附上简短的说明和徽章。

<details>
<summary>Original summary in English</summary>

## Summary by Sourcery

Documentation:
- Add maaframework-skills to the list of MaaFramework-related community
projects with a short description and badges.

</details>

Author: Kutius

README.md

@@ -104,6 +104,9 @@ _✨ 基于图像识别的自动化黑盒测试框架 ✨_
 - [maafw-cli](https://github.com/otowa-kotori/maafw-cli) ![python](https://img.shields.io/badge/Python-3776AB?logo=python&logoColor=white) ![license](https://img.shields.io/github/license/otowa-kotori/maafw-cli) ![activity](https://img.shields.io/github/commit-activity/m/otowa-kotori/maafw-cli?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/otowa-kotori/maafw-cli?style=social) [![pypi](https://img.shields.io/badge/PyPI-3776AB?logo=pypi&logoColor=white)](https://pypi.org/project/maafw-cli/)  
     用于AI Agent的 MaaFramework 命令行界面。
 
+- [maaframework-skills](https://github.com/Kutius/maaframework-skills) ![license](https://img.shields.io/github/license/Kutius/maaframework-skills) ![activity](https://img.shields.io/github/commit-activity/m/Kutius/maaframework-skills?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/Kutius/maaframework-skills?style=social)  
+    Claude Code skill for MaaFramework — 面向 AI 辅助开发的结构化参考文档。
+
 ### 应用程序
 
 - [M9A](https://github.com/MaaXYZ/M9A) ![Pipeline](https://img.shields.io/badge/Pipeline-%23876f69?logo=paddypower&logoColor=%23FFFFFF) ![python](https://img.shields.io/badge/Python-3776AB?logo=python&logoColor=white) ![license](https://img.shields.io/github/license/MaaXYZ/M9A) ![activity](https://img.shields.io/github/commit-activity/m/MaaXYZ/M9A?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/MaaXYZ/M9A?style=social) [![mirrorc](./docs/static/mirrorc-zh.svg)](https://mirrorchyan.com/zh/projects?source=maafw-badge) [![website](https://img.shields.io/badge/https://1999.fan-%234285F4)](https://1999.fan)  

README_en.md

@@ -106,6 +106,9 @@ It offers low-code simplicity while maintaining high extensibility. The framewor
 - [maafw-cli](https://github.com/otowa-kotori/maafw-cli) ![python](https://img.shields.io/badge/Python-3776AB?logo=python&logoColor=white) ![license](https://img.shields.io/github/license/otowa-kotori/maafw-cli) ![activity](https://img.shields.io/github/commit-activity/m/otowa-kotori/maafw-cli?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/otowa-kotori/maafw-cli?style=social) [![pypi](https://img.shields.io/badge/PyPI-3776AB?logo=pypi&logoColor=white)](https://pypi.org/project/maafw-cli/)  
     A MaaFramework command-line interface (CLI) for AI Agents.
 
+- [maaframework-skills](https://github.com/Kutius/maaframework-skills) ![license](https://img.shields.io/github/license/Kutius/maaframework-skills) ![activity](https://img.shields.io/github/commit-activity/m/Kutius/maaframework-skills?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/Kutius/maaframework-skills?style=social)  
+    Claude Code skill for MaaFramework — structured reference docs for AI-assisted pipeline development.
+
 ### Application
 
 - [M9A](https://github.com/MaaXYZ/M9A) ![Pipeline](https://img.shields.io/badge/Pipeline-%23876f69?logo=paddypower&logoColor=%23FFFFFF) ![python](https://img.shields.io/badge/Python-3776AB?logo=python&logoColor=white) ![license](https://img.shields.io/github/license/MaaXYZ/M9A) ![activity](https://img.shields.io/github/commit-activity/m/MaaXYZ/M9A?color=%23ff69b4) ![stars](https://img.shields.io/github/stars/MaaXYZ/M9A?style=social) [![mirrorc](./docs/static/mirrorc-en.svg)](https://mirrorchyan.com/en/projects?source=maafw-badge) [![website](https://img.shields.io/badge/https://1999.fan-%234285F4)](https://1999.fan)