add lora finetune code

haoneng.lhn

2023-07-19 7a19c526024ce68b0a35f37b30b12037dba82240

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7