Solution (#60): [BUG] : Game Over Message Is Poorly Positioned and Lacks Dedicate

[TFGSUMIT]

This pull request addresses the issue of the Game Over message being poorly positioned and lacking a dedicated end screen. It introduces a new gameOverScreen flag to handle the Game Over screen separately from the game logic.

Changes made:

• Introduced gameOverScreen flag to handle Game Over screen separately from game logic.
• Updated paintComponent method to display Game Over screen when gameOverScreen is true.
• Updated keyPressed method to reset game when player presses any key on Game Over screen.

Testing instructions:

• Run the game and lose all lives to see the Game Over screen.
• Press any key on the Game Over screen to see the game reset.
• Verify that the Game Over screen is displayed correctly and that the game resets properly.