Curved Lithophane Box - Micro-USB version

This is a remix of [DCRobotics' Curved Lithophane Box](https://www.thingiverse.com/thing:4698911), which I like very much.

### **Changes** I made:
* Added a "lip" at the front of the lid to match the design of the main box/body and cover a potential gap between the lithophane and the lid
* Increased the main box/body's internal height to 75.5mm to better fit a 4:3 picture (75mm height according to 100mm width) and still have 0.5mm tolerance
* Micro-USB powered
* variants without/with(v8/v9) switch KCD11 (smaller than in original design)
* Minor design changes to increase print-ability

In the original design's comment someone already asked for the "lid with lip". The lid of my design still fits the original box/body of the original design.

To make the USB port integration easier the design is based on a small microUSB breakout board. These are widely available on various marketplaces. The USB-Port/PCB can either be glued in or screwed in with two M3x6 screws.

As USB pr