Add global --verbose flag

[bobbyiliev]

Add a global --verbose flag to the CLI.

• Make --verbose available for all commands
• Print extra debug information when enabled
• Add tests to ensure verbose output works
• Example: python cli.py list --verbose should print debug info

[Manjunath3155]

Hello Bobby! Would love to work on this. Please assign this task to me

[bobbyiliev]

Sounds good! Go for it @Manjunath3155

[abhas20]

@bobbyiliev is it open to work on it? Can I give it a try.