feat: Enhance dashboard with stats cards and task filtering

- Added stats cards to display active, completed, overdue, and due-today tasks on the dashboard.
- Implemented search functionality to filter tasks in real-time based on user input.
- Introduced quick-pick date buttons for easier task date selection.
- Updated task rendering logic to handle empty states for task lists.
- Improved overall user interface with new CSS styles for stat cards and buttons.

chore: Update environment variables and backend error handling

- Fixed formatting in the .env file for consistency.
- Enhanced error handling in the backend API for better debugging.

feat: Revamp frontend pages with new features and pricing sections

- Redesigned the index.html page to include a hero section and feature highlights.
- Created a new features page with dynamic loading of features from JSON.
- Implemented a pricing page that loads plans from JSON and highlights the featured plan.
- Added support and FAQ sections with dynamic content loading and contact form functionality.
- Introduced JSON files for FAQs, features, and pricing to allow easy updates without code changes.

backend/.env

@@ -1,3 +1,3 @@
 PORT = 3001
 MONGO_URI = "mongodb+srv://timmybee:EMqczsTr1oYPBt@cluster0.dombm2a.mongodb.net/?appName=Cluster0"
-APP_URI = "http://localhost:3001"
+APP_URI = "http://localhost:3001"