Virtual cards provider

[rndquu]

https://www.reloadly.com has some drawbacks:

1. Upper limit of a single virtual gift card (1000 USD)
2. Not scalable in terms that if we want a single contributor to have a single virtual card (and brand it as "ubiquity card") then right now we have to mint a dozens of gift cards instead of a single virtual bank card.

We should find a proper virtual cards provider with the following features (available via API):

1. Create a virtual card for a contributor
2. Top up a virtual card of a contributor
3. Check virtual card balance
4. Virtual cards must be tokenized (i.e. can be added to Apple/Google wallet)
5. Virtual cards can be used in South Korea, USA and EU countries

I've sent a couple of inquiries:

Service	Status
https://www.ininal.com	Inquiry sent
https://apibank.club	Inquiry sent
https://wanttopay.net	Inquiry sent
https://pst.net	Inquiry sent