Is your feature request related to a problem?

It would be useful to be able to serialize the data in BatchSchema.selectors through a BatchSchema.to_json() and BatchSchema.to_file() method.

Describe the solution you'd like

The to_json() method would return a json representation of the selectors object (analogous to https://geopandas.org/en/stable/docs/reference/api/geopandas.GeoDataFrame.to_json.html. In the BatchSchema class, there would be a new to_json() method that would format the selectors object into a JSON representation. The main thing thing to be aware of is that the slices will need to be converted to a list.

The new BatchSchema.to_file() method would write this representation to a json file (analogous to https://geopandas.org/en/stable/docs/reference/api/geopandas.GeoDataFrame.to_file.html).

Describe alternatives you've considered

No response

Additional context

The type of BatchSchema.selectors is as follows:

Selectors = Dict[int, List[Dict[Hashable, slice]]]