currencies: List currencies

curl 'https://api.exchange.coinbase.com/currencies'

import requests

resp = requests.get("https://api.exchange.coinbase.com/currencies")
data = resp.json()

import zingu_apis

api = zingu_apis.api("coinbase-pro")
result = api.fetch("currencies")

for item in result:
    print(item)

const resp = await fetch("https://api.exchange.coinbase.com/currencies");
const data = await resp.json();