Sage Pay

Integration Request

Name: Sage Pay
Website: http://www.sagepay.com
Developers Resources: https://test.sagepay.com/documentation/

[roohat]

I'll claim the issue If still persists. I picked the "Sage Pay" just because It's the oldest one needs to implemented. I can implement one of others If it has more priority.

@roohat it's all yours! 🙏