Xbatcher Alternative

This looks maybe promising for an alternative to xbatcher:

https://github.com/xarray-contrib/xbatcher/issues/165#issuecomment-1409683735

```python
batch = (
    ds
    .rolling({"nlat": 3, "nlon": 3})
    .construct({"nlat": "nlat_input", "nlon": "nlon_input"})
    .stack({"input_batch": ("nlat", "nlon")}, create_index=False)
)
```