[Code] Missing package.json or dependency control

[napulen]

This issue is related to the following review: https://github.com/openjournals/joss-reviews/issues/3784

From the main script, it seems that this edo.js requires three third-party dependencies:

• fs
• xml2js
• midi-parser-js

According to the JOSS guidelines, these should be indicated in a package.json or equivalent resource

[MichaelSel]

Added dependencies