Payment integration with Vivawallet#779

Online payment integreation with vivawallet

Features:
Chekcout to vivawallet payment window.
Digitalwallet

documentation: https://developer.vivawallet.com/

example of viva and shopify integration:

Countries supported:

EUR (Euro)
GBP (United Kingdom),
RON (Romania),
PLN (Poland),
SEK (Sweden),
BGN (Bulgaria),
HUF (Hungary),
CZK (Czech Republic),
HRK (Croatia) & DKK (Denmark).

We are willing to contribute to this project

https://developer.vivawallet.com/smart-checkout/

Project is to build integration with Viva Wallet payment window. Digital Wallet to be reviewed as a secondary project.