add async extrinsic

Author: Roman

bittensor/core/extrinsics/asyncex/registration.py

@@ -498,20 +498,24 @@ async def set_subnet_identity_extrinsic(
         },
     )
 
-    success, message = await subtensor.sign_and_send_extrinsic(
+    response = await subtensor.substrate.submit_extrinsic(
         call=call,
         wallet=wallet,
         wait_for_inclusion=wait_for_inclusion,
         wait_for_finalization=wait_for_finalization,
     )
 
-    if success:
+    if not wait_for_finalization and not wait_for_inclusion:
+        return True, f"Identities for subnet {netuid} are sent to the chain."
+
+    if await response.is_success:
         logging.success(
             f":white_heavy_check_mark: [green]Identities for subnet[/green] [blue]{netuid}[/blue] [green]are set.[/green]"
         )
         return True, f"Identities for subnet {netuid} are set."
     else:
+        error_message = await response.error_message
         logging.error(
-            f":cross_mark: Failed to set identity for subnet [blue]{netuid}[/blue]: {message}"
+            f":cross_mark: Failed to set identity for subnet [blue]{netuid}[/blue]: {error_message}"
         )
-        return False, f"Failed to set identity for subnet {netuid}: {message}"
+        return False, f"Failed to set identity for subnet {netuid}: {error_message}"