add geo_grid query type

[nreese]

Add types for Geo-grid query

[swallez]

This should be represented in a different way. AdditionalProperty is used to represent an additional property with an unknown name can is added on top of those already defined in the class.

Here the field name is in the object that wraps the geo information. So this is similar to most queries, that are represented as "foo"?: SingleKeyDictionary<Field, FooQuery> in the QueryContainer class. Existing geo queries are kind of snowflakes in this regard and use a different nesting structure to define the target field.

So this should be something like:

/** @variants container */
class GeoGridQuery {
    geogrid?: GeoTile,
    geohash?: GeoHash,
    geohex?: GeoHexCell,
}

The @variants annotation indicates that only one of the fields can exist at a time.

And then we need to add this to Query:

geo_grid?: SingleKeyDictionary<Field, GeoGridQuery>