Optional sleep behavior

I'd like to suggest adding a config parameter to make the "sleep until an export is ready" behavior optional. This would be very useful in the case where a long-running process is not preferred - for example, when executed as a Fargate task.

This is a great tool and I'm hoping to find a way to use it, thanks for your time.

Start by tracing the export-readiness wait path and the existing configuration entry points in this Go service. Determine how an optional non-blocking behavior should be represented and verify the completed behavior with tests covering both waiting and returning without waiting.

Written by the indexing model from the issue text.