Create a smart QR code that directs the user to appropriate links according to which device they're on

[kpachhai]

Basically, we want to do the following:

• If the user is scanning the QR code from android device, redirect the user to https://play.google.com/store/apps/details?id=org.elastos.essentials.app&hl=en&gl=US
• If the user is scanning the QR code from apple device, redirect the user to https://apps.apple.com/us/app/elastos-essentials/id1568931743

We can probably do this by creating a new API endpoint on Profile API service and creating a QR code that calls that API endpoint.
And the logic to handle whether to redirect the user to one or the other URL is handled via this API endpoint on Profile API service. This way, we just have one QR code on this screen rather than two.