feat(iceberg): add support for creating new iceberg tables with partition keys

[jayakasadev]

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What's changed and what's your intention?

• add partition_by field to iceberg sink when creating new iceberg table
  • allow users to pass a list of fields or function wrapped fields (ie year(date_column))

Checklist

• I have written necessary rustdoc comments.
• I have added necessary unit tests and integration tests.
• I have added test labels as necessary.
• I have added fuzzing tests or opened an issue to track them.
• My PR contains breaking changes.
• My PR changes performance-critical code, so I will run (micro) benchmarks and present the results.
• My PR contains critical fixes that are necessary to be merged into the latest release.

Documentation

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Release note