add paraformer-large-contextual egs_modelscope

lzr265946

2023-02-13 0a7c0661b13e299f68c458d19fc766839cd01bfb

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 1.0
lm_weight: 0.7