Add Cloud back-up and Recovery functionalities

[JelleMillenaar]

Description

Add the functionality during onboarding to store a back-up file to an existing cloud account on a pre-determined location. We do not implement the "Manual" recovery set-up using secrets keys and can be removed from the options. We'll need to consider the logic for frequently backing-up at a fixed interval (or event-driven). Might overall need more alignment.

Motivation

Counter-act the most frequently asked question: What to do when someone loses his phone. Just recover your back-up ;)

Resources

Flows are displayed in the Figma.

To-do List

• [ ] Implement Recovery Set-up (Cloud) Screens
• [ ] Support Google Drive and iCloud (Consider others?)
• [ ] Implement Event-driven and/or fixed interval back-up logic
• [ ] Recover from Cloud Logic & Screens
• [ ] Consider & Implement Manual Back-up (File Download & Upload)