Add Chronos-2 SageMaker notebook

[shchur]

Issue #, if available:

Description of changes:

• Add notebook showcasing how Chronos-2 can be deployed using Amazon SageMaker

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[abdulfatir]

For reference, you can still access the Chronos-Bolt documentation here.

This isn't relevant anymore, right?

Rename deploy-chronos-to-amazon-sagemaker.ipynb to deploy-chronos-2-to-amazon-sagemaker.ipynb?

"pytorch-forecasting-chronos-2": Is this name fixed or will it be updated soon?