Too narrow types; regridding functions can also take xr.DataArray types as argument

[jensdebruijn]

Hello!

I noticed that all of the regridding functions only take xr.DataSet as a type argument, but can also receive a xr.DataArray.

xr.DataSet

->

xr.DataArray | xr.DataSet

One example is here, but it is the case for all of the regridders;

xarray-regrid/src/xarray_regrid/regrid.py

Line 30 in 373bd2a

ds_target_grid: xr.Dataset,