Add support for Braintree local payment methods

[malessani]

Description

This Feature will allow the Braintree payment component to support local payment methods.

The component will use the billing address country to present to the customer the local payment method.

More info on Local Payment methods:

https://developer.paypal.com/braintree/docs/guides/local-payment-methods/overview

https://developer.paypal.com/braintree/docs/guides/local-payment-methods/client-side-custom