feat: add page about

[lumynou5]

Description

美編(?)我實在不在行，可能要交給其他人了。

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	528bbd3
Status:	✅  Deploy successful!
Preview URL:	https://3753179f.lipoic-site.pages.dev
Branch Preview URL:	https://about.lipoic-site.pages.dev

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