Turbopack Build: Optimize instrumentation hook generation (#77832)
## For Maintainers
### What?
- Add `compiled in` for middleware and instrumentation in Turbopack dev.
- Fixed a bug where instrumentation.js was being compiled like a page
file, local testing moves bootup from 2.5s to 700ms when you have a
instrumentation file.
### How?
- Added early returns in `hot-reloader-turbopack.ts` for middleware and
instrumentation paths when there's no route definition, those cases are
handled separately already.
- Added build status indicators in `turbopack-utils.ts` for middleware
and instrumentation using `startBuilding` and `finishBuilding` hooks
- Added proper naming for Node.js and Edge instrumentation in the build
status