* support medmcqa and medbullets benchmark
* Add Medbullets data folder for benchmark support
* revise gen name
* revise config file & remove csv file & add dataset info to dataset-index.yml
* remove csv file
* remove print in medbullets.py
* revise class name
* update_oss_info
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Co-authored-by: MaiziXiao <xxllcc1993@gmail.com>
