Module:MOS degrees/doc

This is version 2 of the MOS degrees module by user:Ganaram inukshuk. This is based more off of the MOS intervals module and older, non-template tables that feature JI ratios, and doesn't depend on genchains (except for note names) to calculate cent values or degree names.

Todo: Rewrite "main function" into a underscore-prefixed function to be called by Lua code and a wrapper to be called by templates. (HIGH PRIORITY!!!) Adopt MOS arithmetic function (MEDIUM-PRIORITY!!!) Add support for double accidentals (low-priority) Move certain helper functions to helper modules (low-priority)