drag/drop in/out

[exdysa]

Is your feature request related to a problem? Please describe.
Working between programs is a bit difficult at the moment with dataset-tools

Describe the solution you'd like
Would be really nice to have drag/drop files into the reader, and also drag/drop thumbnail OUT, so that workflow or settings can be switched between quickly. text can already be drag-dropped out, luckily.

Describe alternatives you've considered
an export menu option is an alternative, or a dialog box to click copy/paste, but it feels not as direct or engaging

Additional context
Add any other context or screenshots about the feature request here.
I shan't.

[exdysa]

Today i think it should be the preview image that is dragged around.