Introduce New Game Features and Customizations

To enhance the gameplay experience, we need to introduce additional features and customization options. This includes adding new gameplay mechanics and customization settings for players.

## Tasks:

- Implement a difficulty setting that adjusts the speed and complexity of the game.
- Add options for players to customize the appearance of the snake (e.g., colors, patterns).
I- ntroduce power-ups and special items that appear randomly during gameplay.
- Update the settings menu to include new customization options.

## Acceptance Criteria:

- The game should have at least two difficulty levels that change gameplay speed and complexity.
- Players should be able to customize the snake’s color and pattern from the settings menu.
- Power-ups should have unique effects and appear randomly.
- The settings menu should be updated to include the new options and be user-friendly.