Knife thrower

[sharmi4590]

PR Description 📜

Please include summary related to the issue you have fixed and describe your PR in brief over here by specifying the issue number on which you were working below
Fixes #3216
I have added a new game "Knife-Thrower" and in this game the user has to click on the knife and it will go to the board , if two knives collapse the game will end. It has 4 different levels and each level has different strategy. If a player loses a level it will automatically goto the first level.It has 4 levels and after clearing 1 level only the user can go to another level.
There will only be particular number of knives and it will decrease on each throw.
It will look as follow.

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• I follow CONTRIBUTING GUIDELINE & CODE OF CONDUCT of this project.
• [x ] I have performed a self-review of my own code or work.
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• [ x] I have added screenshot for website preview in assets/images
• [x ] I have added entries for my game in main README.md
• [x ] I have added README.md in my folder
• [ x] I have specified the respective issue number for which I have requested the new game.

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[kunjgit]

Thank you @sharmi4590 ,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! 😀

[kunjgit]

resolve merge conflicts @sharmi4590 !

[sharmi4590]

@kunjgit Removed the conflicts

[kunjgit]

LGTM!

[kunjgit]

Thank you @sharmi4590 , 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🚀