Handle gridded data

[lewisjared]

Is your feature request related to a problem? Please describe.

I want to be able to handle gridded data in a consistent way. We don't want to support huge datasets i.e. CMIP6 as that would be infeasible to reprocess. Datasets should be less than 1GB, otherwise, other solutions such as zarr should be used.

Datasets that I have in mind:

• EDGAR (Monthy/Annual historical grids ~0.1 deg)
• Country Masks (Shapefile?) - that might be handled differently as it would have to be rasterised on to a given grid size

Describe the solution you'd like

These data should be able to loaded using xarray for filtering.
See core-api gridded data handler

Chunking?