Improvement: Add CLI Flags for Advanced Users

[nova-550]

Currently, users interact with scripts mostly via prompts. While this is simple, power users might prefer CLI arguments.

Proposed Improvement:

• Add optional CLI flags (e.g., --session 25 --break 5 for Pomodoro).
• Maintain interactive prompts for casual users.

Benefits:

• Faster usage for advanced users.
• Enables integration with shell scripts/automation.
• Keeps tool beginner-friendly.

[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊