Automatic app updates

[MattLish]

When new versions of the application are available, the application should auto-update for a user.
This needs to be configurable in the settings to prevent auto-updates that might introduce breaking changes.

[MattLish]

Looks like this might exist out of the box https://nklayman.github.io/vue-cli-plugin-electron-builder/guide/recipes.html#table-of-contents

This might require tweaking the versioning/releasing script that will be added with #50