Enhance Telegram bot with database integration and API features

- Added SQLite database support with Alembic for migrations.
- Implemented FastAPI for HTTP API to manage duties.
- Updated configuration to include database URL and HTTP port.
- Created entrypoint script for Docker to handle migrations and permissions.
- Expanded command handlers to register users and display duties.
- Developed a web application for calendar display of duties.
- Included necessary Pydantic schemas and SQLAlchemy models for data handling.
- Updated requirements.txt to include new dependencies for FastAPI and SQLAlchemy.

docker-compose.prod.yml

@@ -5,8 +5,15 @@ services:
       dockerfile: Dockerfile
     env_file: .env
     restart: always
+    ports:
+      - "${HTTP_PORT:-8080}:8080"
+    volumes:
+      - duty_data:/app/data
     logging:
       driver: json-file
       options:
         max-size: "10m"
         max-file: "3"
+
+volumes:
+  duty_data: {}