Write more articles about server configuration

[xfq]

We have an article on how to set up language negotiation in Apache, but now there are many modern backend frameworks and platforms, beyond traditional HTTP servers like Apache or Nginx, that dynamically return different pages based on HTTP requests. These are often part of full-stack or backend web frameworks. I think we should mention some of them, as it’s very useful for developers. For example:

• Next.js
• Nuxt
• Express
• Django
• Ruby on Rails

When we have the articles, we can mention them in https://www.w3.org/International/techniques/server-setup#language .