Enhance Todo App with Dark/Light Mode, Edit Functionality, Local Storage, and Confetti Animation

[Vimal-Mudalagi]

This pull request introduces several enhancements to the Todo app:

• Dark/Light Mode: Users can toggle between light and dark themes for better visual comfort.
• Edit Functionality: Added the ability to edit existing todos, improving usability and flexibility.
• Local Storage: Todos are now persisted in local storage, allowing users to refresh the page without losing their tasks.
• Confetti Animation: A fun confetti effect is triggered upon completing a todo, enhancing the user experience.
• Responsive Design: Adjusted UI elements to ensure the app is fully responsive and functional on various screen sizes.

Additional Notes:

• All changes have been tested for functionality and responsiveness.
• UI enhancements have been made for a cleaner look and feel.

[Vimal-Mudalagi]

Hi Mahir, I've submitted a pull request with enhancements to the Todo app, including dark/light mode, edit functionality, local storage support, and a confetti animation. Please let me know if you have any feedback or need further changes. Thank you.