feat: enable rich tables

[vagenas]

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Codecov Report

❌ Patch coverage is 91.17647% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
docling_core/types/doc/document.py	90.00%	6 Missing ⚠️

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Related Documentation
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[dolfim-ibm]

Very nice!

[PeterStaar-IBM]

very good, only minor comment: could you add the RichTableCell and AnyTableCell in https://github.com/docling-project/docling-core/blob/main/docling_core/types/doc/__init__.py?

[PeterStaar-IBM]

beautiful!

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Documentation updates
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[simonschoe]

@vagenas Is this already fully implemented? When trying out the ground truth documents introduced with MR and use an document.iterate_items() loop, it seems like rich tables are not yet correctly accounted for.