0.2.6版本新增文件补充

examples/cpp/llama/README.md

+How to generate start_ids.csv
+
+```bash
+# update `model_file` path and `encode_line` content according to the actual situation
+python3 tokenizer.py --model_file /workdir/llama2_13b_chat/tokenizer.model --encode_line 'LMDeploy is a toolkit for compressing, deploying, and serving LLMs.'
+# refer to tokenizer.py for more usage scenarios
+```

examples/cpp/llama/start_ids.csv

+1,365,5773,1022,2376,338,263,5780,7354,363,27122,292,29892,7246,292,29892,322,16330,365,26369,29879,29889

lmdeploy/legacy/__init__.py

+# Copyright (c) OpenMMLab. All rights reserved.