feat(server)!: use parcel watcher

[bluwy]

Description

Decided to give #13593 another shot before deciding if we should fit it into Vite 5. But with the state of the implementation, I don't think it's feasible (for now).

This PR implements a hybrid @parcel/watcher + fs.watch approach, where the former is used for root recursive watching, and the latter for non-recursive watching. parcel-bundler/watcher#92

It also implements chokidar's watcher interface for better compatibility. Ultimately it feels like I'm re-implementing chokidar and would be better as a standalone library, but it's easier to test this way for now.

Additional context

WIP TODO:

• Implement unfinished API
• Make sure it's compatible with chokidar
  • getWatched compatible
  • unwatch and add on the same path should continue watching
  • unlinkDir not correctly detected
• Make tests pass
• Update docs

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[lure23]

Short FYI that also a polling solution is important (what Chokidar does with CHOKIDAR_USEPOLLING=1). I faced this again this week, running development under a VM with mounts to my desktop account. Such mounts don't usually pass change notifications, but the said env.var. has worked nice.

[bluwy]

Closing this for now as I haven't got to finishing this and requires a large rebase. It would still be helpful for others who like to bring this across the line though. My notes about parcel watcher at #13593 (comment) still remain.