Add Pause, Mute, and Full Screen Buttons

[ANKITy102]

Description:

Currently, the Snake game lacks essential controls for player convenience and customization. To improve user experience and accessibility, implement buttons for pausing/resuming the game, muting/unmuting game sounds, and toggling full-screen mode.

Tasks:

• Design and implement a pause button to allow players to pause and resume gameplay at any time.
• Add functionality to mute and unmute game sounds with a dedicated mute button.
• Implement a full-screen button to enable players to switch between windowed and full-screen mode.
• Ensure that the buttons are intuitively placed and visually distinguishable for easy access.

Resolution:

Solve the tasks outlined above and submit a pull request referencing this issue ID (#ISSUE_ID) with a screenshot or video demonstrating the implemented feature.