Change the get data stream api to include the following properties of a data stream:

- ~~Add `index_mode` from `DataStream` to the response.~~
- For each backing index of a data stream with time series index mode, include the temporal range the backing index represents (based on the `index.time_series.start_time` and `index.time_series.end_time` index settings.
server/src/main/java/org/elasticsearch/action/datastreams/GetDataStreamAction.java
public static final GetDataStreamAction INSTANCE = new GetDataStreamAction();
    public static final String NAME = "indices:admin/data_stream/get";
    private GetDataStreamAction() {
        super(NAME, Response::new);
    }
    public static class Request extends MasterNodeReadRequest<Request> implements IndicesRequest.Replaceable {