Add chat template

tokenizer_config.json

@@ -38,6 +38,7 @@
   },
   "bos_token": "<s>",
   "clean_up_tokenization_spaces": false,
+  "chat_template": "{% if messages[0]['role'] == 'system' %}\n    {% set system_message = messages[0]['content'] | trim + '\n\n' %}\n    {% set messages = messages[1:] %}\n{% else %}\n    {% set system_message = '' %}\n{% endif %}\n\n{{ bos_token + system_message }}\n{% for message in messages %}\n    {% if message['role'] == 'system' %}\n        {{ '### System:\n' + message['content'] | trim + '\n\n' }}\n    {% elif message['role'] == 'user' %}\n        {{ '### Instruction:\n' + message['content'] | trim + '\n\n' }}\n    {% elif message['role'] == 'assistant' %}\n        {{ '### Response:\n' + message['content'] | trim + eos_token + '\n\n' }}\n    {% endif %}\n{% endfor %}\n{% if add_generation_prompt %}\n    {{ '### Response:\n' }}\n{% endif %}",
   "eos_token": "</s>",
   "extra_special_tokens": {},
   "legacy": false,