Update email-addresses.js

Adapted for use as a Google Apps Script library.
- Publicly available, library key M26NvEFUvGLQadhq7G3OQmgFzUAA6_aCl.
- Added jsdoc comments to parseOneAddress() and parseAddressList().
- Documentation available: https://script.google.com/macros/library/d/M26NvEFUvGLQadhq7G3OQmgFzUAA6_aCl/1