independent: Get countries by independence status

curl 'https://restcountries.com/v3.1/independent?status=true'

import requests

resp = requests.get(
    "https://restcountries.com/v3.1/independent",
    params={
        'status': 'true',
    },
)
data = resp.json()

import zingu_apis

api = zingu_apis.api("rest-countries")
result = api.fetch("independent", status="true")

for item in result:
    print(item)

const resp = await fetch("https://restcountries.com/v3.1/independent?status=true");
const data = await resp.json();