Update iris/atari/alien/config.json

iris/atari/alien/config.json

@@ -108,6 +108,24 @@
           {
             "call_mode": "auto"
           }
+        },
+        {
+          "name": "decode",
+          "sub_model_name": "decode",
+          "signature": 
+          {
+            "inputs": ["z", "should_postprocess"],
+            "call_mode": "positional"
+          }
+        },
+        {
+          "name": "encode",
+          "sub_model_name": "encode",
+          "signature": 
+          {
+            "inputs": ["observations", "should_postprocess"],
+            "call_mode": "positional"
+          }
         }
       ],
       "methods":