feat: 添加llm文档生成脚本

[wweggplant]

• Add 'make'_llm_doc.sh 'script to generate Formily LLM documents.

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• Ensure the pull request title and commit message follow the Commit Specific in English.
• Fork the repo and create your branch from master or formily_next.
• If you've added code that should be tested, add tests!
• If you've changed APIs, update the documentation.
• Ensure the test suite passes (npm test).
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What have you changed?

Add a script that generates formily's llm documents to customize which stack documents to select.

使用方式

# 在项目根目录下执行, 根据需要输入选择编号后, 添加0表示选择完成, 等待执行即可
chmod +x make_llm_doc.sh && ./make_llm_doc.sh