Provide a way to place an extra widget above the sheet

[fujidaiti]

Something like the FAB located on the top edge of the sheet in this image.

[appinteractive]

Can't one do this already with some Hero around the fab plus a Transformers.translate for the offset? Or do I miss something? 🤔

[fujidaiti]

Yes, but it may take some effort.

[sagnik-sanyal]

Can anyone provide a small sample on how the widget tree will be for showing the button outside the boundaries of bottom sheet as mentioned in #273