Barcode Scanner Hanger

Hanger for a barcode scanner, based on [Barcode scanner holder](https://www.thingiverse.com/thing:4339836) by [King_2507](https://www.thingiverse.com/king_2507/about), modified to mount directly on a wall. I printed it horizontally (with supports) for more strength on the arms, but as light as the scanner is it probably doesn't matter.