Add PWA

[hqw567]

Clear and concise description of the problem

如题

Suggested solution

https://web.dev/learn/pwa/

https://realfavicongenerator.net/

https://github.com/vite-pwa/astro

Alternative

No response

Additional context

No response

Validations

• [X] Follow our Code of Conduct
• [X] Read the Contributing Guide.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.

[nevertoday]

在这个帖子下， 厚颜无耻的帖一个需求， 能不能： 比如问题是，白宫的网址是多少，答案中有网址的情况，都让对应网址href 到对应网址， 目前全部只是文本而已~

[imageList]

Added in https://github.com/ddiu8081/chatgpt-demo/commit/0998579a5c7a6f1168515662717e4cf41973e06c