Setup files for packaging in windows, mac, and linux.

[kevinthmm]

Initial packaging has been setup for windows, mac and linux. User can use mac app right out of packing, but will need windows device to run packing (into installer) for windows.

[kevinthmm]

The following resources were used to setup packaging. Please refer to them to understand and continue.

Setup packaging (DONE)

• https://www.christianengvall.se/electron-packager-tutorial/ Create dmg package (NOT DONE)
• https://www.christianengvall.se/dmg-installer-electron-app/ Create windows installer (NOT DONE)
• https://www.christianengvall.se/electron-windows-installer/

Alternative resource if above method does not work

• https://ourcodeworld.com/articles/read/365/how-to-create-a-windows-installer-for-an-application-built-with-electron-framework