R1:ed0b23cb4d41

Add new Payment Icons

Summary: Fixes T6244, adds icons for payment providers. May split into different sprites down the road.

Test Plan: Photoshop

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6244

Differential Revision: https://secure.phabricator.com/D10642