Database issue

[PritishDoc]

The current MongoDB connection script using Mongoose has the following potential issues:

1.Minimal error handling: Enhance error logging and consider retry logic or alerts.
2.Security concerns: Ensure that the .env file is added to .gitignore and that environment variables are properly checked.
3.Asynchronous handling: Refactor to use async/await for better readability and error management.
4. Ensure the connection is properly closed when not in use to prevent memory leaks.

These improvements would make the code more robust and secure.