Implementing a Google Drive backup system for app settings and book notes

[lschmid83]

I would like to implement a system similar to how WhatsApp creates backups and restores chat history from Google Drive. In the More fragment there would be an option to backup the app data if the user uninstalled or bought a new phone then on the app first run initialisation it would search for a backup and ask if you want to restore it. The backup would contain the users sobriety date, which step they are currently practising and any notes they have made to the reading materials.