refactor: replace get_event_loop with asyncio.run for better async handling in example scripts

examples/payments.py

@@ -1,21 +1,25 @@
+import asyncio
 from pyspapi import SPAPI
 from pyspapi.types import Item
-from asyncio import get_event_loop
 
-spapi = SPAPI(card_id='CARD_ID', token='TOKEN')
+spapi = SPAPI(card_id="CARD_ID", token="TOKEN")
 
-items = [Item('first item', 1, 2, 'first item comment').to_json(),
-         Item('second item', 3, 4, 'second item comment').to_json()]
+
+items = [
+    Item("first item", 1, 2, "first item comment").to_json(),
+    Item("second item", 3, 4, "second item comment").to_json(),
+]
 
 
 async def main():
-    print(await spapi.create_payment(items=items,
-                                     redirect_url='https://www.google.com/',
-                                     webhook_url='https://www.google.com/',
-                                     data='some-data'
-                                     )
-          )
+    print(
+        await spapi.create_payment(
+            items=items,
+            redirect_url="https://www.google.com/",
+            webhook_url="https://www.google.com/",
+            data="some-data",
+        )
+    )
 
 
-loop = get_event_loop()
-loop.run_until_complete(main())
+asyncio.run(main())