Profile backup debug tool

## State

1. BackupService component enabled
2. BackupService debug logging enabled

## Controls

Clicking "Create backup" will create a backup, and then attempt to show an OS notification with the total time it took to create it. This notification may not appear if your OS has not granted the browser to display notifications.

Clicking "Recover from staging folder and launch" will open a file picker to allow you to select a staging folder. Once selected, a new user profile will be created and the data stores from the staging folder will be copied into that new profile. The new profile will then be launched.