feat(game): add power-ups (heart & gem) for extra life and invincibility

[PresenceOP-Coder]

Description

This pull request introduces collectible power-ups to enhance gameplay dynamics in the Flappy Bird game.
It adds two special collectibles with unique effects:

• Heart: Grants an extra life, allowing the player to survive one collision
• Gem: Activates temporary invincibility, letting the bird pass through barriers safely

Additional improvements include:

• Visual effects for collectible items
• Temporary ability management for power-ups
• HUD display for active power-up status

Semver Changes

• Patch (bug fix, no new features)
• Minor (new features, no breaking changes)
• Major (breaking changes)

Issues

Closes #8

Checklist

• I have read the Contributing Guidelines.

[PresenceOP-Coder]

@Just-Here-TO-Code add important labels and only implemented it in level 2 so plz check that one

[PresenceOP-Coder]

there were some issues in this pr fixed it .

[Just-Here-TO-Code]

Great work @PresenceOP-Coder , merging this PR.

[PerHac13]

has been re evaluated