feat: Enable new nested columns

[kristenarmes]

Signed-off-by: Kristen Armes karmes@lyft.com

Summary of Changes

This change enables the new nested columns. This will not change anything for those who have not configured the ComplexTypeTransformer to create TypeMetadata objects for their ColumnMetadatas.

For those that do have the transformer configured, the following changes will be available:

• Expand/collapse each level (use arrows) or all at once (use button in the header)
• View/edit descriptions for nested fields: click on a row and use the sidebar
• Add badges for nested fields (same cURL workflow as before)
• More clear/correct display of nesting that calls out what’s an array vs map vs struct etc.

Tests

N/A

Documentation

Included details in the databuilder README about how to configure the ComplexTypeTransformer.

CheckList

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  • All the public functions and the classes in the PR contain docstrings that explain what it does

[Golodhros]

LGTM