### What this PR does / why we need it?
1. add description of another version of glm5-w4a8 weight
2. update the introduction of installation
3. introduce a script to enable bf16 MTP
### Does this PR introduce _any_ user-facing change?
N/A
### How was this patch tested?
N/A
- vLLM version: v0.15.0
- vLLM main:
9562912cea
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Signed-off-by: yydyzr <liuyuncong1@huawei.com>