Feature Request: Add support for new H SAF product format

The H SAF product owners recently changed the output format of these products, and EUMETSAT requested support for the new format in EUMETView.

We have already implemented a corresponding Satpy plugin (reader + enhancement) for EUMETView’s Image Generation System.

EUMETSAT now asked us to integrate this reader and enhancement into Satpy.
We’d appreciate support and guidance from the Pytroll team on how to best upstream this contribution.