[Compat] Expose torch proxy APIs as public API

[SigureMo]

PR Category

User Experience

PR Types

New features

Description

将 torch proxy 系列 API 暴露为公开 API：

• paddle.compat.enable_torch_proxy
• paddle.compat.disable_torch_proxy
• paddle.compat.extend_torch_proxy_blocked_modules
• paddle.compat.use_torch_proxy_guard

下游使用情况：

• PaddlePaddle/FastDeploy#5211 即将通过 torch proxy 方式使用 triton，后续 flashinfer 等库同样会使用该方式
• PaddleFormers 同样会通过该方式来使用 torchcodec

后续所有兼容性方案走通的算子库/Kernel DSL library 都会通过以下方式来运行：

import paddle

paddle.compat.enable_torch_proxy(scope={"paddle_compatible_library_name"})

import paddle_compatible_library_name

这里 paddle_compatible_library_name 可以是 triton、tilelang、flashinfer、flash_mla、deep_gemm、deep_ep 等通过兼容性方式跑通的生态库，也比较推荐类似 fastdeploy 在 __init__.py 中开启，即

# fastdepoly/__init__.py
import paddle

paddle.compat.enable_torch_proxy(
    scope={
        "triton",
        "flashinfer",
        "deep_gemm",
        # TODO: add other libraries
    }
)

# 后续可以按照原生库的方式来使用 flashinfer 等库

细节可参考 跨生态自定义算子接入

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[codecov-commenter]

Codecov Report

:x: Patch coverage is 80.00000% with 2 lines in your changes missing coverage. Please review. :warning: Please upload report for BASE (develop@2fe9eb7). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
python/paddle/compat/proxy.py	75.00%	2 Missing :warning:

:x: Your patch status has failed because the patch coverage (80.00%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #76823   +/-   ##
==========================================
  Coverage           ?   80.00%           
==========================================
  Files              ?        3           
  Lines              ?       10           
  Branches           ?        0           
==========================================
  Hits               ?        8           
  Misses             ?        2           
  Partials           ?        0           

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