support options for xarray creation, like chunking/lazy loading

Author: colonesej

hat/extract_timeseries/extractor.py

@@ -6,7 +6,11 @@
 
 
 def process_grid_inputs(grid_config):
-    ds = ekd.from_source(*grid_config["source"]).to_xarray()
+    ds = ( 
+        ekd
+        .from_source(*grid_config["source"])
+        .to_xarray(**grid_config.get("to_xarray_options", {}))
+    )
     var_name = find_main_var(ds, 3)
     da = ds[var_name]
     gridx_colname = grid_config.get("coord_x", "lat")