added OOP concept in RPS project

[sangitabera]

📝 Description

🔗 Linked Issue

Closes #315

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📋 Contribution Checklist

• My code strictly adheres to the project guidelines (Standard library only, procedural code, clean spacing).
• I have verified that my files are placed in the correct directory.
• I have tested my changes thoroughly on my local machine.
• I have included interactive emojis and clean console/UI outputs.
• GSSoC 2026: I have been formally assigned to this issue and noted it above.

[vercel]

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[sangitabera]

hii @steam-bell-92,
in this project i reafactorize it using OOP concept, and also added some functions like statistics, file handling that improves user experience that reduce complexity.

[github-actions]

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