[Feature Request]: Add Play Again button after game ends

[vanshika147]

Description

The game currently ends with visual feedback after the timer runs out, but there's no direct option to restart the game. To improve user experience and encourage replayability, a "Play Again" button should be added at the end of the game.

Expected Behaviour

1. After the timer finishes, the game ends as usual.
2. A "Play Again" button appears on the screen.

When the button is clicked:

1. Score resets to 0.
2. Timer resets to 0.
3. Moles start appearing again.
4. Any end-game messages or overlays are cleared.

Current ending screen

Kindly assign me this issue @Samrudhipawar