Produce guardoni electron executable for mac

[ascariandrea]

We need to create a proper .dmg file for our guardoni electron tool.
I think only @cramdoulfa has a macintosh at the moment in the team, so it would leave here a list of commands needed to produce the .dmg:

• pull last updates from daily
• yarn to install new packages
• NODE_ENV=production yarn guardoni build to compile guardoni code
• NODE_ENV=production yarn guardoni dist:mac to produce the .dmg in the guardoni/dist folder

Try to launch the guardoni-${version}.dmg and check the output in ~/.config/guardoni/logs/main.log