Implement a Dedicated Database Connection Module

[BrosG]

Description:
The database connection process is currently directly embedded into the app.js file. This practice can cause difficulties in managing the database connection logic, especially when the application requires multiple different database connections or complex connection configurations.

Recommended Action:
Refactor the database connection setup into a separate module (e.g., dbConnect.js). This module should export a function that establishes a connection to the database and handles all relevant setup and error handling procedures. This function can then be imported and called in the main application file.

Impact:
This change will allow for easier management and modification of the database connection process, making the application more adaptable to future changes in the database setup or architecture.