[MLv2] [BE] Migrate getColumnKey to MLv2

[ranquild]

Blocks #37687

metabase/frontend/src/metabase-lib/queries/utils/get-column-key.ts

Line 13 in 1efa6c6

export const getColumnKey = (

This is the primary function for computing keys for viz settings. It should be fully ported to clojure, so the FE won't have to know so much details about field references format. I'd add this function to a new top-level file in metabase-lib, e.g. visualizations etc. to make it clear it's viz-specific.

Possible signature:

getVizColumnKey(column: DatasetColumn): string;

In context of viz query isn't available, so it would be great to make it work with the column only.

[metamben]

Marking this as blocked, because we need a decision if it this is really needed in the form proposed here. @ranquild might be able to say what exactly is needed.