added async support for various services

AI21.py

@@ -1,9 +1,8 @@
-import requests
+import aiohttp
 import APIKey
 
 
-def check_ai21(key: APIKey):
-
+async def check_ai21(key: APIKey):
     url = "https://api.ai21.com/studio/v1/j2-light/complete"
 
     payload = {
@@ -16,14 +15,15 @@ def check_ai21(key: APIKey):
         "Authorization": f"Bearer {key.api_key}"
     }
 
-    response = requests.post(url, json=payload, headers=headers)
-    if response.status_code not in [200, 402]:
-        return
+    async with aiohttp.ClientSession() as session:
+        async with session.post(url, json=payload, headers=headers) as response:
+            if response.status not in [200, 402]:
+                return
 
-    if response.status_code == 402:  # unsure if this error code also applies to empty keys
-        key.trial_elapsed = True
+            if response.status == 402:  # unsure if this error code also applies to empty keys
+                key.trial_elapsed = True
 
-    return True
+            return True
 
 
 def pretty_print_ai21_keys(keys):