Add 'game_ended_step' to config files

The 'game_ended_step' has been added to both 'environment_config_no_validation.yaml' and 'environment_config.yaml' files. This state will trigger at the end of each game, and now it'll be recognized by the system.

cooperative_cuisine/configs/environment_config.yaml

@@ -187,6 +187,7 @@ hook_callbacks:
       - content_ready
       - dispenser_item_returned
       - additional_state_update
+      - game_ended_step
 
     callback_class: !!python/name:cooperative_cuisine.recording.FileRecorder ''
     callback_class_kwargs:

cooperative_cuisine/configs/environment_config_no_validation.yaml

@@ -184,7 +184,8 @@ hook_callbacks:
       - progress_finished
       - content_ready
       - dispenser_item_returned
-      - additional_state_update
+      - additional_state_update#
+      - game_ended_step
 
     callback_class: !!python/name:cooperative_cuisine.recording.FileRecorder ''
     callback_class_kwargs: