New EMR Serverless with SFN example

[meniluca]

Description of changes: adding a new example to integrate EMR Serverless (a)synchronized jobs submission with Step Function State Machines.

The code creates two example State Machines to submit EMR Serverless jobs asynchronously and synchronously.

Example:

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[meniluca]

Changed the example to add the new .sync start job run now available in Step Functions.

[meniluca]

I should have covered everything 😃👍 , let me know if you would like to have all the commits squashed again. I have also removed a deprecated sfn function and repartitioned the Parquet write example to 1 not to generate too many files.

Have a good rest of the day! 👋

[dacort]

Thank you @meniluca !