Enhance coin flip game with prediction and score system

[PIYUSH-NEXTGEN]

📝 Description

Enhanced the Coin Flip Game by adding an interactive prediction system and gameplay improvements.

✨ Features Added

• Added Heads/Tails selection buttons before flipping
• Added prediction-based gameplay logic
• Flip button now remains disabled until a choice is selected
• Added live score tracking:
  • Wins
  • Losses
  • Current Streak
  • Best Streak
• Improved overall UI layout and game interaction flow

🔧 Additional Improvements

• Fixed rendering issues causing buttons and score UI not to appear
• Checked component initialization and rendering flow across the codebase
• Improved gameplay experience and replayability

🔗 Linked Issue

Closes #581

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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.

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