Scripts used in Feb 2023 to do change some CD file formats. They were original 7z files, but I needed CHD files.

I took some inspiration from 
- [reddit](https://www.reddit.com/r/RetroPie/comments/wgq4eu/comment/ij9krit/)
- [nickheyer/CHDconvert](https://github.com/nickheyer/CHDconvert)