chore(db): Implement database migrations for production

[Zafar7645]

Description
Currently, the application uses synchronize: true for ease of development. Before deploying to a production environment, this must be changed to false to prevent accidental data loss. Also need to consider implementing a case-insensitive unique constraint on the users.email column using CITEXT or a lower() index, as suggested in PR #1.

Acceptance Criteria

• Set synchronize: false in the production database configuration.
• Generate initial TypeORM migrations based on the current entity schema.
• Update the deployment process to run migrations automatically on startup.