airsigmet: Get AIRMET/SIGMET advisories

curl 'https://aviationweather.gov/api/data/airsigmet?format=json'

import requests

resp = requests.get(
    "https://aviationweather.gov/api/data/airsigmet",
    params={
        'format': 'json',
    },
)
data = resp.json()

import zingu_apis

api = zingu_apis.api("aviation-weather-data")
result = api.fetch("airsigmet", format="json")

for item in result:
    print(item)

const resp = await fetch("https://aviationweather.gov/api/data/airsigmet?format=json");
const data = await resp.json();