OS X support

[FreeSlave]

Probably something like this. But probably Carbon or Cocoa has interface for this task. Need to investigate further.

[FreeSlave]

More hints:

• FSMoveObjectToTrashSync from Carbon
• NSWorkspaceRecycleOperation from Cocoa.
• https://github.com/ali-rantakari/trash
• https://github.com/jangson/doublecmd/blob/master/src/platform/utrash.pas

[FreeSlave]

Now it's implemented via FSMoveObjectToTrashSync. Should make Cocoa version later.