take_screenshot turn off clouds for Mapshot

[robertmassaioli]

I was asked to repost this here instead: viewtopic.php?f=23&t=119502

In short, I think take_screenshot should have an option to take the screenshot without clouds so that Mapshot maps look like they did in v1.

No clouds: https://factorio-maps.rmdir.app/app/sav ... /429c1e97/

Splotchy cloudy map: https://factorio-maps.rmdir.app/app/sav ... /331eec0e/

[posila]

Thanks for the request.
Added for 2.0.16