Added Block_Ninja Game to the Repository

[SumitKumar-17]

PR Description 📜

This PR adds the new game "Block Ninja" to the repository. Block Ninja is an engaging and addictive game where players must slash through blocks that appear on the screen while avoiding dangerous obstacles. The game tests the players' reflexes and precision as they aim to score the highest points.

Fixes #3090

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• I have added README.md in my folder
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• I have specified the respective issue number for which I have requested the new game.

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Thank you so much for contributing to our repository 💗

[kunjgit]

Thank you @SumitKumar-17 ,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! 😀

[ishita-43]

place your game 5-10 entries above it is getting merge conflicts

[ishita-43]

Good to go!!

[kunjgit]

Thank you @SumitKumar-17 , 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🚀