Allow nesting of folders

Upon pressing “select items” on the “All decks” list, only the decks and not folders are selectable. However, folders can be dragged one by one into another folder. Would be great to see that folders are also selectable, so that I could do something like:
Current list:
- IASM folder
- CPRS folder
- ChemPath deck
- Histology deck
- Y1 folder (empty)
—> Select items —> Press tick for IASM CPRS Chempath and Histology —> Drag to Y1
instead of
—> Select items —> Press tick for Chempath and Histology —> Drag to Y1 —> Drag IASM to Y1 —> Drag CRPS to Y1
Thank you