Fitbit Charge HR charging stand

Thanks to the work from SerxioSierra and barspin, I remixed their works and made it work for my Fitbit Charge HR.

I changed is the location of the USB charger hole. I also made the hole smaller so it'd really hold the USB cable securely so you can press the Fitbit Charge HR directly into it without worrying about the cable popping out.

Also, I added a little cable retainer at the back. Unfortunately this bit will require supports when you print it.

Since the rest of the model prints n