[TASK] Database Schema & Models

[PEXEL2002]

Task description and detailed requirements:
Implement the ORM (Object-Relational Mapping) layer using SQLAlchemy.

• Define the User model (ID, Email, Hashed Password).
• Create a database utility module to handle session creation and engine initialization.
• Ensure the models automatically create tables in the PostgreSQL container upon startup.

Definition of task completion:
The application successfully connects to PostgreSQL and creates the users table with the correct columns and data types.