feat(dev, node-server): support a hook to access Node.js server instance

[OneCalmCloud]

🔗 Linked issue

solve https://github.com/unjs/nitro/issues/2040

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [ ] 👌 Enhancement (improving an existing functionality like performance)
• [x] ✨ New feature (a non-breaking change that adds functionality)
• [ ] 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• [ ] ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

Hi 👋 this PR can be possible to enable WebSocket and Web Server to share the same port without the need for reverse proxy.

📝 Checklist

• [x] I have linked an issue or discussion.
• [ ] I have updated the documentation accordingly.

[JCtapuk]

When will this PR be added to the main branch?

[JCtapuk]

I propose to expand these events

const server =
  cert && key
    ? new HttpsServer({ key, cert }, toNodeListener(nitroApp.h3App))
    : new HttpServer(toNodeListener(nitroApp.h3App));
    
// others code
nitroApp.hooks.callHook("node.server.init", server);

server.on('upgrade', (req: IncomingMessage) => {
   nitroApp.hooks.callHook("node.server.upgrade", server, req);
})

server.on('listening', () => {
   nitroApp.hooks.callHook("node.server.listening", server);
})

So much more stable for more control. For example, a handshake for WebSocket and the event that the server has started. As well as initialization which will make it possible to register more events for advanced users

[OneCalmCloud]

When will this PR be added to the main branch?

I'm so sorry for the delay in progressing the PR due to my unfamiliarity with GitHub functionalities; I'm actively learning and seeking guidance to contribute effectively to the project.

[pi0]

Sorry for delay on this. I guess now that we have official WebSocket support, it should be less priority but I will defneitly investigate how to make it an extendable addon before introducing 👍🏼