Resolve "gym env"

Closes #86 (closed)

overcooked_simulator/game_content/environment_config_rl.yaml

@@ -123,7 +123,13 @@ extra_setup_functions:
       callback_class: !!python/name:overcooked_simulator.scores.ScoreViaHooks ''
       callback_class_kwargs:
         static_score: -1
-
+  combine:
+    func: !!python/name:overcooked_simulator.hooks.hooks_via_callback_class ''
+    kwargs:
+      hooks: [ drop_off_on_cooking_equipment ]
+      callback_class: !!python/name:overcooked_simulator.scores.ScoreViaHooks ''
+      callback_class_kwargs:
+        static_score: 20
   #  json_states:
   #    func: !!python/name:overcooked_simulator.recording.class_recording_with_hooks ''
   #    kwargs: