[evaluation] improvement on evaluation

[chengeharrison]

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1. fix a bug when the config file contains one category but the answer file doesn't contains that category
2. fix Chinese prompt file
3. support gpt-3.5-turbo and gpt-4 evaluation
4. polish and update README

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[TongLi3701]

Thanks Yuanchen.

Overall looks good. Some minor comments.
Please also test locally make sure everything is runnable including GPT eval and Automatic eval.

Please make all table headers centre such as Description, Chinese Example and so on.

[TongLi3701]

Thanks Yuanchen.