What should we add?

Canada's HRDPS model is on a rotated latitude longitude grid. The following returns an error:

ds = # load grib file with xarray/cfgrib
ds = ds.metpy.parse_cf()
ds.metpy_crs.item().to_cartopy()

# OUT
# ValueError: Unhandled projection: rotated_latitude_longitude

Is the solution to this simply adding the ccrs.RotatedPole projection in metpy/plots/mapping.py?

HRDPS GRIB2 Data:
https://dd.weather.gc.ca/model_hrdps/continental/2.5km/00/000/

Reference

https://eccc-msc.github.io/open-data/msc-data/nwp_hrdps/readme_hrdps-datamart_en/#technical-grids-specification