Feat: Add Light Theme

[alronova]

📝 Description

Implement a Light Theme option in addition to the existing Dark Theme.
Add a Theme Switch component to toggle between themes.
Ensure the theme preference persists across sessions using local storage or similar mechanism.

✅ Tasks

• Create a ThemeContext to manage theme state (light / dark).
• Implement a ThemeSwitch component with a toggle UI (e.g., switch icon, button).
• Update global styles or Tailwind configuration to support both themes.
• Store and load the user’s theme preference from localStorage.
• Ensure consistent styling across all pages and components.
• Test responsiveness and ensure theme transition feels smooth.

🎯 Expected Outcome

• The app supports both Light and Dark themes.
• Users can seamlessly switch themes via a toggle.
• Theme preference persists after page reloads.
• UI consistency and accessibility are maintained across themes.
• Smooth transitions enhance user experience and interface aesthetics.
• None of the pre-existing app behavior is affected.

[HirdyanshKumar]

please assign this to me

[alronova]

sure @HirdyanshKumar, assigning this issue to you. Ensure you visit and follow contribution guidelines properly.