Add Power-ups and Collectibles

[Just-Here-TO-Code]

Description:

Introduce collectible power-ups (like shields, speed boosts, or score multipliers) to make gameplay more exciting.

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Tasks:

• Add collectible items with visual effects
• Implement temporary abilities (speed, invincibility, magnet, etc.)
• Display active power-ups on HUD

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Code of Conduct

• I agree to follow this project's Code of Conduct

[PresenceOP-Coder]

@Just-Here-TO-Code yo assign me