* Add trackColumnExtractViaHeader helper

* Add Lib.extract wrapper

* Track column extractions via header

* Fix analytics event name

* Add tests for extract action analytics

* Set up extractions metadata helper

* Use functionsUseByExtraction in analytics

* Add custom type for ExtractionTag

* Use ExtractionTag in analytics

* [MBQL lib] Add `Lib.columnExtractDrillExtractions`

This gets the extractions from a column-extract drill, which is needed
in the UI.

* Add extractionExpression wrapper

* Add extractionsForDrill helper

* Fix type signature of extractionExpression

* Use expressionParts for getting expression function

* Walk expression to get functions used

* Simplify ColumnExtractionTag

* Fix expected expression

* Be more explicit with what the guard does

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Co-authored-by: Braden Shepherdson <braden@metabase.com>