Flathub Quality Guidelines

[joeraz]

Flathub introduced a new set of "Quality Guidelines" for apps for their display in the Flathub website. PySol's current Flathub configuration has two main problems: the icon and the screenshots.

While I can get new screenshots with the next release, my graphics skills are not quite up to the task. I can make a decent game graphics, but I don't know enough about the quality standards to satisfy the icon/branding requirements (contrast, shadows, contemporary style):

I'm probably going to ask for some help over at Flathub. Though if anyone here is able to support this, it would help a lot.