fix: add label2id and id2label

config.json

@@ -18,5 +18,15 @@
   "post_attention_groups": 1,
   "intermediate_groups": 4,
   "output_groups": 4,
-  "num_labels": 3
+  "num_labels": 3,
+  "label2id": {
+    "ENTAILMENT": 0,
+    "NEUTRAL": 1,
+    "CONTRADICTION": 2,
+  },
+  "id2label": {
+    "0": "ENTAILMENT",
+    "1": "NEUTRAL",
+    "2": "CONTRADICTION"
+  }
 }