16-puzzle added

[Yashgabani845]

PR Description 📜

i have added 16_puzzle game added
i have added html,cs,js file and added game entry in readme,json,images
Fixes #3878

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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 added entries for my game in main README.md
• I have added README.md in my folder
• I have added working video of the game in README.md (optional)
• I have specified the respective issue number for which I have requested the new game.

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[kunjgit]

Thank you @Yashgabani845 ,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! 😀

[Yashgabani845]

@kunjgit please review it
if everything is well,
and make sure you assign me this PR and add labels so that no conflict occure in future
thank you

[Yashgabani845]

/assign

[kunjgit]

Thank you @Yashgabani845 , 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🚀