Check For Updates Setting

[trymeouteh]

Is your feature request related to a problem? Please describe.
An opt-in setting to check for updates in the app

Describe the solution you'd like
An opt-in setting to check for updates in the app. When the setting is enabled, the app will check for updates when the app launches and every 12-24 hours. If there is an update, it will notify the user with a notification.

Describe alternatives you've considered
None

Additional context
None

[maltfield]

Good idea. Currently blocked by #16

[maltfield]

Additional context: this is intentionally not the default behaviour because we don't want our app to reach out to BusKill servers as it could alert Eve to the fact that you're using BusKill software. For more info, see:

• https://docs.buskill.in/buskill-app/en/v0.6.0/software_usr/gui.html#updating
• Debian/Ubuntu Repository #45 (comment)

It's important that implementation of this option would include a "confirmation" dialog that tells the user of the risks and makes them confirm before it's enabled.

This "confirmation" dialog functionality was just implemented last week (currently it's used to warn the user of the risk of data loss when enabling the 'soft-shutdown' trigger in the GUI's Settings screen).