kaldi-native-fbank: add build-kaldi-native-fbank.yml for riscv64 wheels

[luhenry]

• Package: kaldi-native-fbank
• Version: 1.22.3
• Source: https://github.com/csukuangfj/kaldi-native-fbank
• Docs: https://github.com/csukuangfj/kaldi-native-fbank

Compiles a from-scratch, dependency-free reimplementation of Kaldi's fbank/mfcc speech feature extractors, pybind11-bound via a plain setup.py CMake build. Upstream publishes no riscv64 wheel.

Mirrors upstream's build-wheels.yaml.

Differs from upstream

• Nothing beyond the riscv64 image.

Testing

• Upstream's own wheel job runs no test command at all; this adds pytest against the real suite (numpy/torch from our registry).
• Excludes test_online_fbank.py/test_online_mfcc.py (need unpublished kaldifeat, sys.exit(0) breaks collection) and runs test_rfft.py/test_feature_demo.py/test_online_raw_audio_samples.py directly - upstream's own tree never wires them into pytest.

License: Wheel statically links kissfft (BSD-3-Clause), fetched via CMake FetchContent; upstream's PyPI wheels ship no licence text for it, so the build adds LICENSE.kissfft.

Patches

• 0001-ship-kissfft-s-BSD-3-Clause-LICENSE-in-the-wheel-s-.patch - Upstream-Status: To upstream. Without it, dist-info/licenses/ carries only kaldi-native-fbank's own LICENSE; reproduces on any host, verified against the real PyPI wheel.

Built on cp312; 28 passed, 0 skipped.