Feature request: Add Support for Loyalty Cards

[CaptainSpof]

What's the feature 🧐

The places I shop at typically offer to scan a barcode / QR Code. This allows the user to quickly link their order to their account.

I would like the ability to add a store's loyalty card, with the ability to enter a barcode or QR code.

Extra information and references

For reference, this is a link I found showing a quick peak of the feature in Google Wallet.

screenshot from https://wallet.google/#loyalty