New payment method: Toss

[revi]

Payment method name: toss

Payment method website: https://toss.im/en

Link to icon in .SVG format (if available): https://static.toss.im/icons/svg/logo.svg but with a Wordmark, unfortunately.

This is primarily Korean service, fyi. Please note that the user-configurable URL to transfer to them is on https://toss.me, for example toss.me/revinim (also that it can be Korean chars, not just ASCII)