Add chat_template

tokenizer_config.json

@@ -31,5 +31,6 @@
         "normalized":true,
         "rstrip":false,
         "single_word":false
-    }
+    },
+    "chat_template": "{% for message in messages %}\n{% if message['role'] == 'user' %}\n{{ '<|user|>\n' + message['content'] }}\n{% elif message['role'] == 'assistant' %}\n{{ '<|assistant|>\n'  + message['content'] + eos_token }}\n{% endif %}\n{% if loop.last and add_generation_prompt %}\n{{ '<|assistant|>' }}\n{% endif %}\n{% endfor %}",
 }