Shell file operations

[gave92]

Resolved / Related Issues
Items resolved / related issues by this PR.

• Closes Ongoing Tasks when file copying reports too slow in chunks instead of realtime. #2543
• Closes Add support for canceling a file operation #2904
• Closes Improve the Speed and Reliability of Storage Item Operations #632
• Closes File transfer progress bar/ background File transfer #4112

Details of Changes
Add details of changes here.

• Use shell for file operations
• Refactor fulltrust process

Pros of shell operations:

• Progress for copying big files
• Possibility to cancel ongoing operations
• Reliability
• Continue when closing the app

Implemented [updating]

• Delete, Copy, Move, Rename, Restore from bin
• Undo/Redo support
• Cancel operations

TODO [updating]

• Operations as admin
• Test with drag&drop
• Test on network drives, phone..

Validation
How did you test these changes?

• Built and ran the app

[yaira2]

@gave92 Can you check what happens when you paste multiple items in the same directory you copied them from? It doesn't seem to do anything on my end.

[gave92]

@gave92 Can you check what happens when you paste multiple items in the same directory you copied them from? It doesn't seem to do anything on my end.

I get the usual "conflicts resolution" dialog and if I choose "generate new name" the files get copied.

[yaira2]

Great work!!! Thank you!