3442fbdb23
### What this PR does / why we need it? add basic v1 mtp features please merge it after https://github.com/vllm-project/vllm-ascend/pull/874 and https://github.com/vllm-project/vllm-ascend/pull/844. ### Does this PR introduce _any_ user-facing change? now, we supported basic v1 mtp, only supported tp only、eager mode and k=1 we will continue to expand more scenarios. ### How was this patch tested? local tested Signed-off-by: XWFAlone <xuewenfei2@huawei.com> Co-authored-by: mengwei805 <mengwei25@huawei.com> Co-authored-by: JC-ut0 <xuyexiong@huawei.com>