Adding pause and play buttons

[TanviPoddar]

Description

I would like to add a pause button and a play button so that the user can pause and play the game at their convenience.

Screenshots

Proposed Solution (optional)

Pls assign me this issue, I would love to work on it! P.S. I have contributed successfully to this project before.

Checklist

• [X] I have checked the existing issues
• [X] I have read the Contributing Guidelines
• [X] I am willing to work on this issue (optional)