fix: fix MacOs issue in case multi instance of same class is used #51

[undici77]

Enhance handleFsEvent to manage file and directory events more precisely

• Retrieve and convert CFStringRef path from eventPaths to StringType.
• Introduce path splitting to extract filename and directory components.
• Add conditional check for single file monitoring to trigger seeSingleFileChanges only for the monitored filename.
• Implement directory scanning check using isInDirectory before invoking walkAndSeeChanges.
• Improve overall event handling logic to ensure only relevant changes are processed.