Add support for any not yet covered Stellagama products

[xdy]

Is your feature request related to a problem? Please describe.
We don't yet support all Stellagama products, this is disturbing!

Describe the solution you'd like
I want all Stellagama products to be fully supported in Twodsix!

Describe alternatives you've considered
Just keep using pen and paper like some Barbarian! (Hmm...)

Additional context
Omer Golan-Joel just gave permission to use all Stellagama material (https://discord.com/channels/739941799820394606/750107317604712458/828640838619627550), so, anything is fair game.

This issue is more of an epic than an issue. I.e. if someone tackles improving/adding support for anything by Stellagama, that should probably it's own issue that references this one.

We have good to decent support for Cepheus Light, Cepheus Faster Than Light, Cepheus Atom and Cepheus Quantum. (But things can certainly be improved, see https://github.com/xdy/twodsix-foundryvtt/blob/master/docs/docs.md for notes on what workarounds are currently needed).

I don't know what the situation is for These Stars are Ours, though I suspect that using the Cepheus Engine settings should work at least ok, but no compendiums are available.

For Barbaric!, Swords of Cepheus, Quantum Sorcery, well, they're at least usable using the settings appropriate for the closest ancestor variant, but we have no compendiums and the character sheet and theming isn't really ideal.

See https://www.drivethrurpg.com/browse/pub/9571/Stellagama-Publishing for a list of their products.

[jonepatr]

Omer has offered to provide us with Stellagama Publishing Graphics
for example TSAO maps, adventure maps, TSAO logos/coats of arms, UFO maps.

Would be nice to create a separate module with this!
Contact Omer via PM on discord for the materials.