Add support to React Refresh

[gaetan-puleo]

React refresh is not working when using @hono/vite-dev-server and vite-react-plugin.

To make it works, we should transform the HTML with viteServer.transformIndexHtml(req.url, html)

https://github.com/vitejs/vite-plugin-react/tree/main/packages/plugin-react

[gaetan-puleo]

It could be possible to do it here
https://github.com/honojs/vite-plugins/blob/main/packages/dev-server/src/dev-server.ts#L168

The issue is we are using Stream here.

[gaetan-puleo]

As a workaround take a look here.
#142 (comment)

[gaetan-puleo]

We can close the issue if you want @yusukebe or we can wait for an "official way" to do it.