Port sorted-routes.ts to Rust (#48334)
`getSortedRoutes` is used in the `BuildManifestPlugin`, which I'm in the
process of porting to Next.js Turbo as part of Next Build. As such, I
ported it to Rust using GPT-4 (with manual review over the code).
The resulting code is not particularly idiomatic nor optimized Rust
code, but it passes all tests (similarly converted) and should be more
than fast enough for now.
In the process of porting, GPT-4 made some "suggestions" (read: it
automatically and silently changed parts of the code) which actually fix
some formatting issues with errors:
https://github.com/vercel/next.js/pull/48298
Co-authored-by: Tobias Koppers <tobias.koppers@googlemail.com>
