Through-hole Plates for Adjustable GPU Bracket - M3 Screw Compatible

Remixed back plate and new front plate for the adjustable GPU bracket found [here.](https://www.thingiverse.com/thing:2145801) This one is able to use M3 screws and nuts to secure the lifter quite snugly. It shouldn't affect any clearances compared to the original bracket system. Please note you will still need to download and print the bracket arm and lifter from the other collection, as these two items were the only ones I made from scratch.

This required me to use 35mm M3 screws. Just run them through the holes on the front plate and fit the pins into the lifter slots, through the bracket arm into the back plate, and secure it all together with the hex nuts installed.

I printed the back plate on the smaller face with supports in order to get a clean and even surface for the hex nuts to fit into.