Refactor path suppression handling in ChangeProcessor and ApiService

- Updated the `suppressed_paths` structure in `ChangeProcessor` and `ApiService` to store counts for both remove and create/write events, enhancing the accuracy of event suppression.
- Refactored methods for suppressing and unsuppressing paths to accommodate the new structure, ensuring that the system correctly manages VFS events based on the type of operation.
- Improved documentation and comments to clarify the purpose and behavior of the suppression logic, contributing to better maintainability and understanding of the code.

src/syncback/fs_snapshot.rs

@@ -5,6 +5,9 @@ use std::{
     sync::atomic::{AtomicUsize, Ordering},
 };
 
+#[cfg(windows)]
+use std::{thread, time::Duration};
+
 use memofs::Vfs;
 use rayon::prelude::*;