feat: add id2label and label2id config attributes

config.json

@@ -17,6 +17,14 @@
   "pad_token_id": 0,
   "position_embedding_type": "absolute",
   "problem_type": "single_label_classification",
+  "id2label": {
+    "0": "not-toxic",
+    "1": "toxic"
+  },
+  "label2id": {
+    "not-toxic": 0,
+    "toxic": 1
+  },
   "torch_dtype": "float32",
   "transformers_version": "4.53.2",
   "type_vocab_size": 2,