Debian builds for ARM64 and Linux x64

[neochaos42]

Motivation

For debian based systems the most accessible form of packaging is the .deb

Change description

Updates the package.json, post-package.js and build.yml to support debian builds for both ARM64 and x64

Other information

circumvent issues with fpm listed here
electron-userland/electron-builder#5154 (comment)

sudo apt install ruby ruby-dev
sudo gem install fpm

Then when you run your build:

USE_SYSTEM_FPM=true yarn run electron-builder build --linux deb

Reviewer checklist

• PR addresses a single concern.
• The PR has no duplicates (please search among the Pull Requests before creating one)
• PR title and description are properly filled.
• Docs have been added / updated (for bug fixes / features)