Use case

Currently, all detected previews are presented as one grid/list. It would be helpful to group previews into collapsible groups or sidebar tabs.

Proposal

Allow specifying a group (or some other "path") on a preview. An API for this could look something like:

@Preview(name: 'MyText', group: 'components')
Widget myTextPreview() {...}

@Preview(name: 'MyButton', group: 'components')
Widget myButtonPreview() {...}

@Preview(name: 'HomeScreen', group: 'screens')
Widget homeScreenPreview() {...}

Here, myTextPreview and myButtonPreview would display together, and homeScreenPreview would be shown separetely.