Test: copy files/folders between windows

Refs: https://github.com/Microsoft/vscode/issues/27837

- [x] any os: @jrieken 
- [x] any os: @sandy081

Complexity: 2

You can now copy/paste files and folders across windows via the file explorer. Verify this works as advertised from the VS Code files explorer for single- and multi-selection for files and folders.