Adding Molecule_builder

[kumar11jr]

PR Description 📜

Adding molecule_builder a new game
Fixes #3003

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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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Add your screenshots(Optional) 📸

(https://github.com/kunjgit/GameZone/assets/104729493/877ffd6a-7e6c-4dd6-beb4-f3bf1c508c4c)

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Thank you soo much for contributing to our repository 💗

[kunjgit]

Thank you @kumar11jr ,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]

Hey @kumar11jr, you can't open another pull request before completing the previous one 😀
You already have the following 1 open pull request(s):
#2979

[kunjgit]

Thank you @kumar11jr , 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🚀