Backup & restore using JSON #10
Description
Currently, the backup & restore feature is implemented by copying and pasting the entire database file. This can cause issues when restoring database of a different version. It also requires the app to restart, affecting user experience.
A better solution for backup & restore is to use JSON. By writing and parsing JSON file with database version stored, the issues mentioned above can be solved. In addtion, it doesn't require the app to restart.