docs: Add tutorial to README.md

[donggu-kang]

Hello!

I’m a big supporter of your project.
To help more people experience and deploy it effortlessly, I’ve written a step‑by‑step Getting Started Guide (tutorial).

I’ve personally followed the guide on macOS and verified that everything works as expected.

Thank you for considering this pull request, and I’d be grateful if you could merge it.

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您好！

我非常支持您的项目。
为了让更多人能够轻松体验并部署该项目，我编写了一份 快速上手教程。

我已在 macOS 上亲自按照教程运行并确认其可行性。

感谢您审阅此 Pull Request，期待能够合并。

[Jackywine]

感谢你的教程，我先看看怎么合并！

[donggu-kang]

Hello! A merge conflict occurred with my README.md file due to another recent PR that was merged. I have now resolved the conflict and updated this PR. I would appreciate it if you could review and merge it. Thank you!

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你好！由于最近合并了另一个PR，我修改的 README.md 文件产生了合并冲突。不过，我已经解决了这个冲突并更新了此PR。麻烦您审核并合并，谢谢！