Add GPU Utilities for new HintBridge

[darth-cy]

No description provided.

[Copilot]

Pull request overview

This PR adds CUDA/GPU support for the HintSpaceProvider periphery chip used by the new HintBridge, enabling GPU-side trace generation for the hint space provider table and registering the chip in the GPU prover extension.

Changes:

• Added a #[cfg(feature = "cuda")] GPU chip wrapper (HintSpaceProviderChipGpu) that uploads accumulated (hint_id, offset, value) triples to the GPU and invokes a CUDA tracegen kernel.
• Registered HintSpaceProviderChipGpu in the native GPU prover extension prior to NativeSumcheckChipGpu to respect dispatch ordering.
• Added CUDA ABI bindings and a new CUDA kernel implementation (hint_space_provider.cu) for trace generation.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
extensions/native/circuit/src/hint_space_provider.rs	Adds CUDA-only GPU chip wrapper that drains CPU-collected hint records and generates the provider trace on GPU.
extensions/native/circuit/src/extension/cuda.rs	Registers the GPU hint space provider chip in the native GPU prover extension (ordering relative to sumcheck).
extensions/native/circuit/src/cuda_abi.rs	Adds FFI bindings for the hint space provider CUDA tracegen entrypoint.
extensions/native/circuit/cuda/src/hint_space_provider.cu	Implements the CUDA kernel to write provider trace rows from uploaded triples.

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[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

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