Klipper Box - Raspberry Pi Zero GPIO cut out

I changed gumo_design's a bit to enable for GPIO connectivity. I'm running Klipper on a Raspberry Pi Zero 2W and powering it with the Ender 3 v2 screen cable power via GPIO pins instead of using the USB power port, so added a cut out on the cable box lid, modified the sliders slightly and also added a cut out on the Pi case. I also removed the front-most slot from the cable box lid (since I was not going to use it) and added some cut outs for my slightly over sized M2 screws.
I also added the STEP file containing the modified parts.