Enhancement: Update README file with additional information.

[akhilrocz]

PR Description 📜

Updated README.md file for 3d snake game with additional information added to it.Detailed information of how to play the game,game rules,tips etc.
Fixes #3026

---

Mark the task you have completed ✅

• I follow CONTRIBUTING GUIDELINE & CODE OF CONDUCT of this project.
• I have performed a self-review of my own code or work.
• I have commented my code, particularly in hard-to-understand areas.
• My changes generates no new warnings.
• I have followed proper naming convention showed in CONTRIBUTING GUIDELINE
• I have added screenshot for website preview in assets/images
• I have specified the respective issue number for which I have requested the new game.

---

Add your screenshots(Optional) 📸

---

Thank you soo much for contributing to our repository 💗

[kunjgit]

Thank you @akhilrocz ,for creating the PR and contributing to our GameZone 💗
Review team will review the PR and will reach out to you soon! 😇
Make sure that you have marked all the tasks that you are done with ✅.
Thank you for your patience! 😀

[akhilrocz]

I linked a PR that solves the issue please check the maintainers and merge it if it relly solves the issue.

[kunjgit]

Thank you @akhilrocz , for your valuable time and contribution in our GameZone 💗.
It’s our GameZone, so Let’s build this GameZone altogether !!🤝
Hoping to see you soon with another PR again 😇
Wishing you all the best for your journey into Open Source🚀