Adding timer feature

[SENTHILnew]

📝 Description This pull request adds a timer feature. The timer can be enabled or disabled by the moderator. The timer automatically starts on clicking restart. The timer can be disabled anytime. Once the set time is over (only supported time seconds for now) will automatically reveal the voting

🛠️ Changes made Added new components for showing timer progress and timer toggle button. Modified gameController component to accommodate the timer toggle and timer progress controls.

🧪 Testing Added unit tests to ensure the proper toggling of timer control. Added unit tests for timer end reveal feature.

📸 Screenshots