Add a helper script for moving needle files
    
    I actually wrote this a while back but have just been keeping it
    on my local machine till now; figured I'd clean it up a bit and
    add it to the repo. It's just a little helper for moving needles
    into subdirectories, it's useful if you do a big needle retake
    and have dozens of needles you need to put in the right subdirs,
    saves figuring them out for yourself.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>