feat: initial public release v0.1.0 — MLX port of pyannote-speaker-diarization-3.1

Byte-parity with pyannote-PyTorch reference (cosine 0.763718 identical
at 6 decimals on 200 cross-window slot pairs). 2.5x faster than
pyannote-MPS on Apple Silicon native.

Extracted from gitea.tavportal.com/olivier/MLX_CONVERTOR commit 5f9eafa.

tests/unit/test_diar_sincnet.py

@@ -0,0 +1,12 @@
+import mlx.core as mx
+from pyannote_diarization_3_1_mlx._sincnet import SincNet
+
+
+def test_sincnet_output_shape_589_frames():
+    """For pyannote 3.1, 10s @ 16kHz input → 589 frames out."""
+    net = SincNet(sample_rate=16000)
+    x = mx.zeros((1, 1, 16000 * 10))  # (B, C, T)
+    out = net(x)
+    # Expect (1, 60, 589) per upstream PyanNet.SincNet output
+    assert out.shape[-1] == 589, f"got frames={out.shape[-1]}"
+    assert out.shape[1] == 60, f"got channels={out.shape[1]}"