📝 docs: update README with enhanced GitWiz documentation and formatting

The README has been updated to provide a more structured and user-friendly guide for setting up and using GitWiz. The changes include better formatting with clear headings, additional tips and explanations, and a comprehensive guide on integrating GitWiz as a GitHub Action. These improvements aim to make the tool more accessible and easier to understand for new users, while also providing detailed instructions for advanced configurations and usage scenarios.

Author: SHSharkar