Use Hono in docs

[ryuapp]

Hono has its own jsx, it's good to use it on hono.dev to show off.
It doesn't have to be the jsx, but using Hono on the website means we can actually use Hono, so it's great.

Something similar is being done in #262 , but there is no movement, so I opened this issue.

[ryuapp]

I made this based on the following: vuejs/vitepress#2183 (comment)

SSR won't work there, but we can at least use it as an example for hono/jsx.
If you want to try it, see: https://github.com/ryuapp/honojs-website/tree/hono-jsx-in-vitepress

Good morning, @ryuapp!
First of all, I apologise for the reduced movement on that PR for personal reasons.

I'm currently trying to build something like VitePress with HonoX. This is not the way you are planning to do it now, but you can refer to it if you like. Thanks!!!

https://github.com/goisaki/hono-doxs
https://honox-website.pages.dev/docs