add paraformer online opt infer code

haoneng.lhn

2023-09-14 dcb92f13eddbf3032ce363b35f13f80afa8f94d1

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beam_size: 5
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7