Added feature store and pyspark notebooks with sagemaker_core SDK

[A-yush]

Feature store notebook is giving error due to pydantic library. Pyspark processing notebook is working fine and I have updated the code according to sagemaker_core SDK

Issue #, if available: Feature store group creation not working due to pydantic error. Pyspark processing notebook is working as expected. Modified code according to sagemaker_core

Description of changes: Added feature store and pyspark notebooks with sagemaker_core S

Testing done: Yes for Pyspark processing notebook

Merge Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your pull request.

• [ X] I have verified that my PR does not contain any new notebook/s which demonstrate a SageMaker functionality already showcased by another existing notebook in the repository
• [X ] I have read the CONTRIBUTING doc and adhered to the guidelines regarding folder placement, notebook naming convention and example notebook best practices
• [ ] I have updated the necessary documentation, including the README of the appropriate folder as well as the index.rst file
• [X ] I have tested my notebook(s) and ensured it runs end-to-end
• [ ] I have linted my notebook(s) and code using black-nb -l 100 {path}/{notebook-name}.ipynb

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