docs: 新增学习用刀图文教程并推荐 COOKer 衍生作品 (#1889)

* docs: add COOKer to derived projects

* docs: add illustrated kitchen knife learning guide

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Co-authored-by: Anduin Xue <anduin@aiursoft.com>

.github/templates/readme_template.md

@@ -59,4 +59,5 @@ docker run -d -p 5000:5000 aiursoft/howtocookviewer
 - [孕养一日：离线孕期膳食与生活记录APP](https://github.com/lichong-a/pregnancy-nutrition-tracking)
 - [是啊吃什么(YeahWhat2Eat)](https://github.com/chiadan/YearWhat2Eat)
 - [Vibe Cook：一款基于 HowToCook，把「看着馋但迟迟不动手」变成「跟着一步步就做出来了」的沉浸式烹饪 App](https://github.com/zkeq/vibe-cook)　[在线访问](https://cook.corerevive.cn)
+- [COOKer：基于 HowToCook 的个人做饭助手，支持按食材推荐、菜谱检索、人数换算、购物清单和 MCP 接入](https://github.com/Bryce-border/COOKer-agent)
 - [Cannon Tales：基于 HowToCook 的多语言在线菜谱站，支持 16 种语言](https://cannontales.com/)