2020 tool holder remixed

I don't remix stuff much, but the USB that came with my Ender-3 broke. So the oval USB holder did not fix the USB card I got to replace it. The old design was great, but I had to make a fix.

This is based on the 2020 tool holder. But was all done with updates.

I remove things I didn't use and made it where it did rattle.

OpenSCAD source included if you can add the things I removed.