Adds a more intuitive way to interact with sets of faces.
Internally, face sets are stored as a regular boolean attribute, so they can be manipulated and read via Geometry Nodes, as you would any other attribute.
When a mesh is selected and in edit mode, in the mesh data panel there will be a new menu "Face Sets". Adding faces to a face set behaves the same way as adding a vertex to a vertex group.
This addon is based on Face-Maps-Legacy by TYO79