Add Peek Funcionality to the DirectoryQueue

[UlyssesAlves]

For what I've seen, we can't just peek items from the DirectoryQueue without removing (reading) them from the Queue.

It would be useful if it allowed us to just peek (reading without removing) items from the queue, so that we would only actually remove the item from the queue in case we consider the item was used for its intendend purpose.

I need this in a current project I'm working on because I can't lose the items on the queue after reading them unless they are successfully processed by another component. Unfortunately, without peek funcionality, I can't implement this requirement in my application.

Could you please add Peek funcionality to the DirectoryQueue?