Rsbuild integration and contribution guidance

Describe the feature

Hi! Are there any plans or ongoing work to support an Rsbuild integration in Nitro, similar to nitro/vite?

The use case is to combine Rsbuild's frontend and SSR builds with Nitro's API routes, middleware, prerendering, and deployment presets through an integrated development and build workflow.

Before starting any implementation, I'd like to understand the maintainers' preferred direction:

• Would an Rsbuild integration be welcome, and is there any existing work to coordinate with?
• Would an adapter that lets Rsbuild compile the application while reusing Nitro's existing server bundler be a reasonable first step?
• Are there architectural constraints or blockers to consider, especially around SSR development, runtime sharing, and deployment compatibility?

I'm happy to help investigate any blockers, build a prototype, and contribute implementation and tests. Please let me know what initial scope would be most useful and where I could help.

Additional information

• Would you be willing to help implement this feature?