Add chat_template for /chat/completions

tokenizer_config.json

@@ -226,7 +226,8 @@
     "<|image_pad|>",
     "<|video_pad|>"
   ],
-  "bos_token": null,
+  "bos_token": "<|endoftext|>",
+  "chat_template": "{% for message in messages %}{{'<|im_start|>' + message['role'] + '\\n' + message['content'] + '<|im_end|>\\n'}}{% endfor %}{% if add_generation_prompt %}{{ '<|im_start|>assistant\\n' }}{% endif %}",
   "clean_up_tokenization_spaces": false,
   "eos_token": "<|im_end|>",
   "errors": "replace",