Add default chat template to tokenizer_config.json

[Automated] This PR adds the default chat template to the tokenizer config, allowing the model to be used with the new conversational widget (see [PR](https://github.com/huggingface/huggingface.js/pull/457)).

If the default is not appropriate for your model, please set `tokenizer.chat_template` to an appropriate template. See https://huggingface.co/docs/transformers/main/chat_templating for more information.

tokenizer_config.json

@@ -1,34 +1,35 @@
 {
-  "add_bos_token": false,
-  "add_prefix_space": false,
-  "bos_token": {
-    "__type": "AddedToken",
-    "content": "<|endoftext|>",
-    "lstrip": false,
-    "normalized": true,
-    "rstrip": false,
-    "single_word": false
-  },
-  "eos_token": {
-    "__type": "AddedToken",
-    "content": "<|endoftext|>",
-    "lstrip": false,
-    "normalized": true,
-    "rstrip": false,
-    "single_word": false
-  },
-  "errors": "replace",
-  "model_max_length": 1024,
-  "name_or_path": "microsoft/DialoGPT-medium",
-  "pad_token": null,
-  "special_tokens_map_file": null,
-  "tokenizer_class": "GPT2Tokenizer",
-  "unk_token": {
-    "__type": "AddedToken",
-    "content": "<|endoftext|>",
-    "lstrip": false,
-    "normalized": true,
-    "rstrip": false,
-    "single_word": false
-  }
-}
+    "add_bos_token": false,
+    "add_prefix_space": false,
+    "bos_token": {
+        "__type": "AddedToken",
+        "content": "<|endoftext|>",
+        "lstrip": false,
+        "normalized": true,
+        "rstrip": false,
+        "single_word": false
+    },
+    "eos_token": {
+        "__type": "AddedToken",
+        "content": "<|endoftext|>",
+        "lstrip": false,
+        "normalized": true,
+        "rstrip": false,
+        "single_word": false
+    },
+    "errors": "replace",
+    "model_max_length": 1024,
+    "name_or_path": "microsoft/DialoGPT-medium",
+    "pad_token": null,
+    "special_tokens_map_file": null,
+    "tokenizer_class": "GPT2Tokenizer",
+    "unk_token": {
+        "__type": "AddedToken",
+        "content": "<|endoftext|>",
+        "lstrip": false,
+        "normalized": true,
+        "rstrip": false,
+        "single_word": false
+    },
+    "chat_template": "{% for message in messages %}{{ message.content }}{{ eos_token }}{% endfor %}"
+}