Support for Figma variants

Better support needed for configuring the export of Figma components with variants.

For the attached design file, after QDS import, a separate QML component is created for each Figma variant.  E.g. for the checkbox component, 2 separate QML files are generated: one component for checked state and one for the unchecked state.

Expected: one checkbox QML component is generated, maybe with the possibility to configure in Qt Bridge the properties which can be changed for the different variants.