Kodama: An array of three Insta360 Air cameras

Kodama, which is named after the [tree spirits](https://en.wikipedia.org/wiki/Kodama_(spirit)) it so closely resembles, is an array incorporating three Insta360 Air cameras in a very small mount that minimizes parallax and ensures all areas in the 360-degree view are seen by at least two of the component cameras.

Simultaneous capture of three 3008x1504 video streams over USB is a bit challenging for most laptops and even desktop computers. However, the resulting image data allows computing en