portable hard disk support remixed (from wd elements hdd vertical support)

Thanks to the original model from DrLex, I downloaded it, printed it, and saw it was too loose for my Hdd, so I used FreeCad to transform the STL in Solid, and removed 3 mm wide to make it better fit my disk, and i also added holes to be able to screw it somewhere (although I don't now where at the moment ;-)