Switch from YAML to RON

[joetsoi]

https://xkcd.com/927/

Originally it was easy to have config files in yaml as python had libraries for this already. I don't think ron is the best-thing-ever or anything like that, but warmy allows parsing ron into a resource automagically https://docs.rs/warmy/0.13.0/warmy/index.html#feature-gates and it would mean I could delete the https://github.com/joetsoi/OpenMoonstone/tree/master/loadable_yaml_macro_derive which is just bad.