Add auto-update

[taylortom]

Feature description

Add a feature to allow the app to automatically update the local adapt_framework with no user/admin input at a configurable interval.

This feature needs to work in a very similar way as the implementation here: adapt-security/adapt-authoring-contentplugin#72

Key points

• Should share the same configuration options as New: Add auto-update feature with configurable CRON scheduling adapt-authoring-contentplugin#72
• Should share the same logging approach
• Functions already exist to check (getLatestVersion) & run (updateFramework) updates, so they should be used

Can you work on this feature?

• I can contribute