chore(main): enhanced and updated primary playground documentation

[Vinyl-Davyl]

Main content of the pull request delivers an enhanced and updated primary documentation(README) for the Accord Project Playground, aiming to significantly improve user onboarding and learning experience.

Key Enhancements:

• Improved Clarity: The document has been reorganized and rewritten for better readability and understanding. This streamlines the learning process for users of all backgrounds.
• Expanded Content: Additional explanations, examples, and (optional) deeper dives into specific functionalities have been incorporated. This fosters a more comprehensive understanding of the Accord Project Playground's capabilities.
• Enhanced User Experience: The overall presentation and formatting of the documentation have been improved, making it easier to navigate and visually appealing.

Benefits:

• Reduced Initial Comprehending Curve: New users can grasp the Accord Project Playground's functionalities faster, leading to increased adoption and engagement.
• Empowered More Contributors and Devs: More comprehensive documentation empowers developers with a deeper knowledge base, enabling them to leverage Accord Project more effectively.
• Improved Project Maintainability: Clear and concise documentation ensures easier onboarding for future contributors

[Vinyl-Davyl]

Hello @sanketshevkar @DianaLease Now good to go now. Please could you review this.