Add summary to landscape sustainability doc

Hi,

We are putting together a landscape doc for CNCF Environmental Sustainability TAG. Would be nice to have a summary on this project here.

https://github.com/catblade/wg-env-sustainability/blob/main/documentation/WhitePapers/SustainabilityUseCasesAndLandscape2022.md

Do you have someone who can add a summary? This project is already called out, but not summarized.

I'm one of the chairs for the group. Feel free to contact me on slack or here.

Thanks,
--Marlow