A Go script that scans directory structure and saves it to output.txt

• Scans any directory (current directory by default)
• Option to show only directories or both directories and files
• Creates hierarchical tree structure with indentation
• Uses emoji icons for visual distinction (📁 for folders, 📄 for files)
• Saves results to output.txt in specified location

1. Run the script: go run main.go
2. Enter directory to scan (press Enter for current directory)
3. Choose whether to show only directories (y/n)
4. Specify output path for output.txt (press Enter for current directory)

📁 folder1
  📁 subfolder
    📄 file1.txt
    📄 file2.txt
  📄 document.pdf
📁 folder2
📄 README.md