v0.7.3 support speculative decoding #252
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What this PR does / why we need it?
support speculative decoding in Ascend, including speculating with a draft model、by matching n-grams in the prompt、using MLP speculators and using EAGLE based draft models.
Does this PR introduce any user-facing change?
u can refer to https://docs.vllm.ai/en/latest/features/spec_decode.html#
How was this patch tested?
Four modes of speculative decoding have been tested, consistent with GPU devices