Snowplow event for extract action via notebook shortcut

[romeovs]

Closes #42093

Depends on code from, #41774, so review that first.

Description

Adds an analytics event that fires when the custom column is created from the expression editor in the notebook via the extract shortcut.

To reproduce

1. New question -> Sample data -> Orders
2. Add new column
3. Select Extract column shortcut
4. pick an extraction
5. Verify the snowplow event was triggered

[replay-io]

Status	Complete ↗︎
Commit	06a682e
Results	⚠️ 7 Flaky ✅ 2454 Passed

[ranquild]

@romeovs this looks wrong. Why? Because we have an abstraction (extraction tag) and then we need a mapping to the actual expression name. It means that the abstraction is leaky and doesn't work. Furthermore, it creates more issues.

If we need the actual expression name, let's change the tag to be the name of the underlying expression. @bshepherdson please take a look at this.

[bshepherdson]

@romeovs this looks wrong. Why? Because we have an abstraction (extraction tag) and then we need a mapping to the actual expression name. It means that the abstraction is leaky and doesn't work. Furthermore, it creates more issues.

If we need the actual expression name, let's change the tag to be the name of the underlying expression. @bshepherdson please take a look at this.

It's not the case that an extraction corresponds 1-1 with an expression function. Some of them are nested - indeed the current extractions for Day of week, Month of year and Quarter of year expand to eg. [:month-name {} [:month {} column]].

That said, I think the table in extractions.ts is the wrong approach. If we want to list all the functions used by the extraction, then I think the right answer is to call Lib.expressionParts(Lib.extractionExpression(theExtraction)) and walk that tree to get all the operators.