ENHANCE : Show Score Card on Pause

Description:
Currently, when the user clicks on the "Pause" button in the Pong game, the gameplay halts but there’s no visual indication or score update shown. This can make the pause state feel abrupt or confusing.

Proposed Solution:
Display a centered card when the game is paused, which includes:

-Current score of both players (ravneet vs AI)
-A "Resume" button
-Optional: Backdrop blur or dark overlay for focus

Benefits:
-Improves clarity and user experience during pause
-Gives users a quick look at their progress
-Adds a professional and polished UI touch

Suggested Implementation:
-Use a useState hook to toggle pause state
-Conditionally render a