docs: stream requests async example

docs/asynchronous.rst

@@ -22,4 +22,10 @@ the same example of using the synchronization method can be found `here <payment
 
 .. literalinclude:: ../examples/payment_async.py
    :language: python
-   :linenos:
+   :linenos:
+
+The following example helps you listen to multiple endpoints asynchronously.
+
+.. literalinclude:: ../examples/stream_requests_async.py
+   :language: python
+   :linenos:

examples/stream_requests_async.py

@@ -0,0 +1,42 @@
+import asyncio
+
+from stellar_sdk import AiohttpClient, Server
+
+HORIZON_URL = "https://horizon.stellar.org"
+
+
+async def payments():
+    async with Server(HORIZON_URL, AiohttpClient()) as server:
+        async for payment in server.payments().cursor(cursor="now").stream():
+            print(f"Payment: {payment}")
+
+
+async def effects():
+    async with Server(HORIZON_URL, AiohttpClient()) as server:
+        async for effect in server.effects().cursor(cursor="now").stream():
+            print(f"Effect: {effect}")
+
+
+async def operations():
+    async with Server(HORIZON_URL, AiohttpClient()) as server:
+        async for operation in server.operations().cursor(cursor="now").stream():
+            print(f"Operation: {operation}")
+
+
+async def transactions():
+    async with Server(HORIZON_URL, AiohttpClient()) as server:
+        async for transaction in server.transactions().cursor(cursor="now").stream():
+            print(f"Transaction: {transaction}")
+
+
+async def listen():
+    await asyncio.gather(
+        payments(),
+        effects(),
+        operations(),
+        transactions()
+    )
+
+
+if __name__ == '__main__':
+    asyncio.run(listen())