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.
modules/data-streams/src/main/java/org/elasticsearch/datastreams/action/GetDataStreamsTransportAction.java
GetDataStreamAction.Request,
    GetDataStreamAction.Response> {
    private static final Logger LOGGER = LogManager.getLogger(GetDataStreamsTransportAction.class);
    private final SystemIndices systemIndices;
    @Inject
    public GetDataStreamsTransportAction(
        TransportService transportService,
        ClusterService clusterService,
        ThreadPool threadPool,
        ActionFilters actionFilters,
        IndexNameExpressionResolver indexNameExpressionResolver,
        SystemIndices systemIndices
    ) {
        super(
            GetDataStreamAction.NAME,
            transportService,
            clusterService,
            threadPool,
            actionFilters,
            GetDataStreamAction.Request::new,
            indexNameExpressionResolver,
            GetDataStreamAction.Response::new,
            ThreadPool.Names.SAME
        );
        this.systemIndices = systemIndices;
    }