Ele fusion

[BingooYang]

Motivation

glm4.5模型性能优化

Modifications

1. 添加cast+sgmoid + add融合算子（对应sglang torch compile自动融合部分）
2. 在glm模型中使能该融合算子

Usage or Command

no

Accuracy Tests

fastdeploy/layers/fused_cast_sigmoid_bias.py

Checklist

• Add at least a tag in the PR title.
  • Tag list: [[FDConfig],[APIServer],[Engine], [Scheduler], [PD Disaggregation], [Executor], [Graph Optimization], [Speculative Decoding], [RL], [Models], [Quantization], [Loader], [OP], [KVCache], [DataProcessor], [BugFix], [Docs], [CI], [Optimization], [Feature], [Benchmark], [Others], [XPU], [HPU], [GCU], [DCU], [Iluvatar], [Metax]]
  • You can add new tags based on the PR content, but the semantics must be clear.
• Format your code, run pre-commit before commit.
• Add unit tests. Please write the reason in this PR if no unit tests.
• Provide accuracy results.
• If the current PR is submitting to the release branch, make sure the PR has been submitted to the develop branch, then cherry-pick it to the release branch with the [Cherry-Pick] PR tag.

[paddle-bot]

Thanks for your contribution!

[codecov-commenter]

Codecov Report

❌ Patch coverage is 51.85185% with 13 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (develop@6cff780). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
..._executor/layers/moe/fused_moe_deepgemm_backend.py	20.00%	4 Missing ⚠️
...el_executor/layers/moe/fused_moe_marlin_backend.py	0.00%	4 Missing ⚠️
...el_executor/layers/moe/fused_moe_triton_backend.py	25.00%	3 Missing ⚠️
...l_executor/layers/moe/fused_moe_cutlass_backend.py	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop    #6880   +/-   ##
==========================================
  Coverage           ?   73.02%           
==========================================
  Files              ?      400           
  Lines              ?    56422           
  Branches           ?     8930           
==========================================
  Hits               ?    41202           
  Misses             ?    12275           
  Partials           ?     2945           

Flag	Coverage Δ
GPU	73.02% <51.85%> (?)

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[heavengate]

LGTM