- Closes https://github.com/enso-org/cloud-v2/issues/697
- Adds infrastructure to support drag-and-drop
- Implements drag-and-drop for deleting and undeleting assets
- Implements drag-and-drop for moving assets to a new directory (or the root directory)
- Also implements "cut" and "paste" context menu actions (and keyboard shortcuts) using the new endpoint for moving files
- "Copy" and "duplicate" actions are *not* implemented, as I don't think there are backend endpoints for those yet.
- Fades items out when cutting (Cmd+X), fades them back in when cancelling (Esc)
- Fixes bug where keyboard shortcut handlers were not registered for table-wide shortcuts (delete all, restore all, cut all)
# Important Notes
Drag-and-drop for more situations are planned but intentionally not yet implemented:
- Labels (backend is WIP, and blocked on the corresponding frontend PR)
- Moving assets between folders (backend functionality does not yet exist)
