add mossformer code

haoneng.lhn

2023-08-10 b1e980d501f0e6132c76e977a459cf07f3794c56

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