Added reverse memory game

[tanyagupta01]

🛠️ Fixes Issue #1797

👨‍💻 Changes proposed and Brief Description

The Reverse Memory Game is a fun and challenging memory game where you must recall a sequence of colors in reverse order. With each successful recall, the sequence length increases, making the game progressively harder.

✅ Check List (Check all the applicable boxes)

• My code doesn't break any part of the project
• This PR does not contain plagiarized content.
• My Addition/Changes works properly and matches the overall repo pattern.
• The title of my pull request is a short description of the requested changes.

📷 Screenshots

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[swapnilsparsh]

Add your project in the index.html also,

[swapnilsparsh]

Game is not working properly, please check it once.

[tanyagupta01]

@swapnilsparsh could you please tell me what the problem is in the game ? I have checked it.

[tanyagupta01]

rev.mem.mov

[swapnilsparsh]

@tanyagupta01 Thank you for contributing to this repo. Looking forward for more 🚀