Allow dragging Box into a Box Group

[Germs2004]

Is your feature request related to a problem or use case?

In the Sandboxie GUI, I create separate Boxes for each purpose, and categorize them into Box Groups. It takes 3 clicks to move a new Box into a Box Group. When I try to drag-drop a Box into an existing Box Group, the dragging only highlights multiple Boxes - it doesn't do the expected "move" action on the dragged Box.

Describe the solution you'd like

Allow the user to drag-and-drop a Box into a Box Group. It's intuitive and much faster than using the right-click menu.

Describe alternatives you've considered

No response