Fix appointment date parsing

[staging-devin-ai-integration]

Add models and appointment views

Description

Implemented Doctor, Patient, and Appointment models. Added create, list, update, and delete appointment views.

Changes

• Created Doctor, Patient, and Appointment models in appointments/models.py.
• Implemented create_appointment, list_appointments, update_appointment, and delete_appointment view functions in appointments/views.py.
• Defined URL patterns for the appointment views in appointments/urls.py.
• Updated the main urls.py to include the appointments app URLs.
• Configured the database connection in settings.py and docker-compose.yaml.
• Added logging configuration in settings.py.

Testing

• Successfully tested the create_appointment, list_appointments, update_appointment, and delete_appointment endpoints locally using cURL.

Deployment

• The changes have been merged into the main branch and are ready for deployment.

Additional Information

• Fixed key retrieval and string parsing for appointment_date in the create_appointment function.
• Ensured appointment_date is a string before parsing to resolve the "fromisoformat: argument must be str" error.

This Devin run was requested by Naveen.