PayPal Checkout - Line Items

[drewangell]

Story

As a developer, I would like a demo kit that adds line item details to the PayPal request, so that I can follow along and see how this is done.

Details

We should replicate the express-checkout-line-items demo kit.

The slug for this new demo kit should be paypal-checkout-line-items

[meet-creedally]

@drewangell

Updated the slug from express-checkout-line-items to paypal-checkout-line-items. As per the current config, it is using Classic mode, so the Classic button is displayed. The entire flow has been tested for Classic, REST, and upgrade modes. When the API mode is switched to REST, the latest v6 SDK button will be loaded.

Branch Link - PPL-174