[Feature]: Refactor the repository to make it more robust and easier to work with

[Colin23]

🌟 Situation

Currently the repository is missing information (e.g. no README) and isn't very robust (e.g. when git is not installed the script doesn't fail gracefully)

🎯 Task

• Add more information for other developer.
• Add more error handling and robustness.
• Modularize logic that can be reused in other scripts.
• Split complex logic to be more digestible.

🛠️ Action

• Add more echo statements.
• Add more if statements
• Add a lib directory or something similar
• Add more comments

🏆 Result

The same functionality, but easier to understand code.

🙋‍♀️ Are you willing to contribute to this feature?

Yes, I'm ready to contribute!

📝 Code of Conduct

• I agree to follow this project's Code of Conduct