Option to create hard symbolic link

[Ep0chalypse]

It would be very useful if there was a option to create a hard symbolic link instead of copying or moving the files.

For instance: I have my cellphone sync photos and videos to my home server via resilio sync to a unsorted folder. I then run sortphotos to organize(I use the move option) the unsorted photos to a sorted folder. The problem is that next time my phone goes to sync the files, it resyncs ALL the files again. Using the copy option is slower and results in having duplicate files.

Using a hard link would allow the original unsorted photos to remain in place while also having the photos sorted into another directory that my photo applications work from. All that would require no extra disk spaces used.

[LokiDogg]

I went ahead and implemented this and added a pull request #145