File Organizer Script

Summary

A script that scans a directory and automatically sorts files into folders by type or date — practice for the `fs` module, path manipulation, and async iteration.

• 1Use `fs.promises.readdir` and `path.extname` to categorize files by type.
• 2Handle errors gracefully — permission issues, files in use.
• 3Add a `--dry-run` flag that previews changes without moving any files.