[Feature] change ngram spec deode to triton op (vllm-project#11925)

### What this PR does / why we need it?
refer to: vllm-project#9008 . In
order to reduce subsequent maintenance costs，change ngram_spec_decode
ascend c op to triton op. In long context, the effect of Triton operator
is basically the same as that of Ascend C operator

test results:

- input length 128/ output length 100: ttft +5.4%( 221-> 233)， tpot +10%
(40 -> 44)
- input length 1024/ output length 100: ttft +5%(2620->2767), tpot
0%(67->69)
- input length 21000/output length 100: ttft +0.86%(186155->187761) ,
tpot 0%(219.79->220)

Collaborate with @CarterDuan


- vLLM version: v0.25.1
- vLLM main:
vllm-project/vllm@d02df74

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Signed-off-by: HF-001 <1670186653@qq.com>

Author: HF-001