Expose more Greenworks Steam cloud APIs to NW.Js and Electron (1.4.0: Supports NW.Js 0.82.0, Steam SDK 1.58, Greenworks 0.15, Electron with efc).
It's not exposed in this addon.
I also don't see it in the underlying greenworks library (which you could access through scripting.) You can see more here: github.com/greenheartgames/greenworks/blob/master/docs/friends.md
Thank you!