feature: Turbopack support

[YaredFall]

With release of Next 15 turbopack is becoming the new default for dev builds.
Unfortunatelly, this package only works with webpack.

withRoutes wrapper function should provide both webpack and turbopack configs.

However, I'm not sure if it is possible at the moment, as turbopack does not have plugins support yet.

[jonkwheeler]

Need to bump this. This prevents us from using turbopack.

[tatethurston]

@jonkwheeler are you using Turbopack exclusively for dev or also for production builds (still experimental the last time I checked).

The primary challenge here is that Turbopack doesn’t expose a rich plugin model, so we need to identify a pattern for registering the watch mode for the routes code generation, or introduce a separate watch process outside of the next dev process.

That said, the existing approach used for webpack might be viable with minimal work, we’ll just need to identify how to determine whether to run in watch mode or not.

[jonkwheeler]

I actually recommended this just be apart of the core nextjs package at this point. I created a work around that is dead simple and compiler agnostic. Check it out.

vercel/next.js#83256