Turbopack: refactor side effects optimization (#82466)
### What?
Refactors the side effects optimization.
* Gets rid of the `<module evaluation>` and the `<exports>` module.
* Only two modules: `<local>` and the facade.
* The local module has all the evaluation side effects and local exports.
* The facade reexports the local module and all reexports of the module.
* `require()` and `import *` will resolve to the facade module
* `import "..."` will resolve to the locals
* `import { x } from "..."` will follow reexports and finally imports from a locals module
