Improve performance of watcher, operations and props loading

[hez2010]

Details of Changes

• Remove unnecessary semaphore
• Added AsyncManualResetEvent to unblock threads
• Insert a bunch of cancellation points for props loading to cancel eagerly before heavy I/O operations
• Remove SQLite naming cache because it harms navigation speed and introduced inconsistency (displayName may change), but only brings little benefit, which doesn't worth
• Parallelize copy, cut and remove preparation process

File creation is usually a combination of creation (creating a file handle) and modification (writing initial content), given that UpdateFileOrFolderAsync is slow, we introduced performance regression unexpectedly in #5992. This PR also aims to resolve the performance issue of UpdateFileOrFolderAsync:

• Lowered priority of file update
• Avoid checking sync status for folders don't support sync
• Parallel update

Contributes to #4180

Validation
How did you test these changes?

• Built and ran the app
• Tested the changes for accessibility

Screenshots (optional)
Before:

before.mp4

before.mp4

After:

after.mp4

after.mp4

[zsh2401]

Wonderful Effect!

[hez2010]

@gave92 Improvements I planned to do have done. This PR is ready for review now.

[winston-de]

lgtm

[winston-de]

Probably also closes #5822

[yaira2]

Probably also closes #5822

It doesn't seem to load thumbnails much faster.

[yaira2]

@hez2010 great work!

[hez2010]

@yaichenbaum This PR somehow makes icon loading higher priority than extended props loading, so it does contribute to #5822