{indicator}: Get specific indicator across all countries

curl 'https://api.tradingeconomics.com/country/all/gdp?c=guest%3Aguest&f=json'

import requests

resp = requests.get(
    "https://api.tradingeconomics.com/country/all/gdp",
    params={
        'c': 'guest:guest',
        'f': 'json',
    },
)
data = resp.json()

import zingu_apis

api = zingu_apis.api("tradingeconomics")
result = api.fetch("country/all/{indicator}", c="guest:guest", f="json")

for item in result:
    print(item)

const resp = await fetch("https://api.tradingeconomics.com/country/all/gdp?c=guest%3Aguest&f=json");
const data = await resp.json();