Implement Async `S3KeySensor` about astronomer-providers HOT 4 CLOSED

This implementation needs to include the Async version of S3Hook

https://github.com/apache/airflow/blob/206cce971da6941e8c1b0d3c4dbf4fa8afe0fba4/airflow/providers/amazon/aws/hooks/s3.py

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Based on the existing sync implementation, S3KeySensor uses S3Hook. S3KeySensorAsync needs the Async implementation for S3HookAsync. aiobotocore can be used for the hook connection. S3KeySensorAsync can defer itself with a trigger tied to the event that should resume it. This frees up the worker to run something else. The trigger is run until it fires, at which point its source task is re-scheduled. The scheduler queues the task to resume on a worker node. Working on this implementation.

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Draft #45

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Done with changes recommended by Daniel. Working on test.

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