Sofle V2 RGB Case Modded

Remix from [thysdewet](https://www.thingiverse.com/thysdewet)'s awesome bevel case. And huge thanks for my fellow collaborator [@keysbyluker](https://www.instagram.com/keysbyluker/)

Changes:

* Enlarge the TRRS cable cutout hole to accommodate more cables with bigger housing (12mm width x 10mm height). Top clearance: 1.5mm, bottom: 2.5mm.
* Redesign mounting holes to add support for sandwich mounting style: M2 screw - Standoff - M2 screw configuration (illustrated in the hand drawn pic by keysbyluker)
* Add 1mm width clearance for USB-C cutout