[Feature Request] Work with GeoJSON Point

[dyve]

We export (large) datasets with point columns in GeoJSON format.

Example from a column named "point:

{ "type": "Point", "coordinates": [ 5.3430820412792, 52.442771066885001 ] }

I'd like to be able to configure datasette-cluster-map to read the x, y / lng, lat from this column.

[dyve]

Work-around for queries:

SELECT *,
 json_extract(point, '$.coordinates[0]') AS lng,
 json_extract(point, '$.coordinates[1]') AS lat
FROM ... WHERE ...;