Returns a complete list of all supported currencies on Helio, including fiat and crypto. Use this to retrieve currency IDs for Pay Link creation.
api.hel.io/v1 and generate API keys there. For the development environment, use api.dev.hel.io/v1 and generate API keys from moonpay.dev.hel.io.FIAT, DIGITAL PAYMENT_PRICING, PAYMENT_RECIPIENT, SWAP