Support the "magic loop" with Task SDK

[kaxil]

Support https://airflow.apache.org/docs/apache-airflow/stable/howto/dynamic-dag-generation.html#optimizing-dag-parsing-delays-during-execution with Task SDK

airflow/task_sdk/src/airflow/sdk/execution_time/task_runner.py

Lines 408 to 411 in e164f3c

	log = structlog.get_logger(logger_name="task")
	# TODO: set the "magic loop" context vars for parsing
	ti = parse(msg)
	log.debug("DAG file parsed", file=msg.dag_rel_path)