Adding faulthandler (#325)

* Update hotword.py

Author: shivasiddharth

google-assistant-sdk/googlesamples/assistant/library/hotword.py

@@ -16,7 +16,6 @@
 
 
 from __future__ import print_function
-
 import argparse
 import json
 import os.path
@@ -29,6 +28,9 @@
 from google.assistant.library.file_helpers import existing_file
 from google.assistant.library.device_helpers import register_device
 
+import faulthandler
+faulthandler.enable()
+
 try:
     FileNotFoundError
 except NameError: