Add modular SA-ASR recipe for M2MeT2.0 (#831)

yhliang

2023-08-10 08ee9e6aacc2e306211d393f6e8ce3a7f3620102

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