Retrieve a list of phone numbers.
This endpoint supports pagination and filtering by voice assistant or squad.
Parameters: request (Request): The FastAPI request object. skip (int): The number of phone numbers to skip (for pagination). limit (int): The maximum number of phone numbers to return. voice_assistant_id (Optional[int]): Filter by voice assistant ID. squad_id (Optional[int]): Filter by squad ID. db (AsyncSession): The database session (injected). organization_id (Optional[str]): The organization ID from the API key or request.
Returns: List[PhoneNumber]: A list of phone numbers.
Raises: HTTPException: - 400: If organization ID is missing - 404: If filtered voice assistant or squad is not found - 500: If an unexpected error occurs during retrieval