perception: add CenterPoint proposal refine hook

[sxy0523]

Summary

• Add an opt-in CenterPoint proposal refinement hook behind enable_proposal_refine=false by default.
• Add deterministic mock_zero and mock_delta refinement modes for integration and unit testing without adding runtime quantum dependencies.
• Wire proposal refinement after CenterPoint proposal decoding and before object construction, preserving the existing default behavior when disabled.
• Add focused unit tests and documentation for the extension point.

Scope

• No Apollo public interface changes.
• No Cyber RT channel changes.
• No tracking, fusion, prediction, or planning changes.
• No PennyLane, Qiskit, or quantum Python dependencies are added to Apollo runtime.

Validation

• bazel --output_user_root=/tmp/apollo_bazel test --config=cpu --distdir=/tmp/apollo_distdir --repository_cache=/tmp/apollo_repos --disk_cache=/tmp/apollo_build_cache --cache_test_results=no --test_output=errors //modules/perception/lidar_detection:proposal_refine_test
• bazel --output_user_root=/tmp/apollo_bazel build --config=gpu --config=nvidia --copt=-mavx2 --host_copt=-mavx2 --define ENABLE_PROFILER=true --distdir=/tmp/apollo_distdir --repository_cache=/tmp/apollo_repos --disk_cache=/tmp/apollo_build_cache //modules/perception/lidar_detection:apollo_perception_lidar_detection //modules/perception/lidar_detection:liblidar_detection_component.so
• bazel --output_user_root=/tmp/apollo_bazel build --config=gpu --config=nvidia --copt=-mavx2 --host_copt=-mavx2 --define ENABLE_PROFILER=true --distdir=/tmp/apollo_distdir --repository_cache=/tmp/apollo_repos --disk_cache=/tmp/apollo_build_cache //modules/perception/lidar_detection:center_point_proposal_refine_cpplint //modules/perception/lidar_detection:proposal_refine_test_cpplint
• git diff --check

Contributor

Contributor: sxy0523 (史翔宇), 北京交通大学人工智能安全实验室（THETA Lab）

CLA: I have read and agree to the Apollo Individual Contributor License Agreement.

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