add torchtitan

Author: lowdy1

.github/workflows/ascend_npu_test.yml

@@ -56,7 +56,7 @@ on:
           - ascendai/cann:7.0.1-910b-ubuntu22.04-py3.8
           - ascendai/cann:8.0.0-910b-ubuntu22.04-py3.10
           - ascendai/cann:latest
-        default: "ascendai/cann:7.0.1-910b-ubuntu22.04-py3.8"
+        default: "ascendai/cann:latest"
         description: "The docker image which will be loaded"
 
 # Only cancel the previous runs when triggered by a pull_request event