Support for more card types

[sattvik]

It might be nice to be able to support more card types than just the x-card. I don't know how hard it would be to make it configurable, or to make certain things selectable or not.

The idea is to be able to support systems such as the TTRPG Safety Toolkit.

[Nedrapter]

I support this suggestion. Adding N, O cards or the possibility to add your own custom cards.