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Update src/controllers/_data_extractor.py

fix: update Response model to use Optional for data field and correct method call in DataExtractorService

feat: Update DataExtractorController and DataExtractorService to use Optional for message_history; add __init__.py for prompts module; modify Pydantic models to use Optional for list fields; raise exceptions in PydanticAgent

feat: Implement DataExtractorController and DataExtractorService for data extraction functionality

feat: Initialize FastAPI project with database configuration and CRUD structure