[Model] Add Tencent AuK speech generation and editing (encoder + diffusion pipeline) (#7385)

Signed-off-by: Yueqian Lin <linyueqian@outlook.com>
Co-authored-by: Sy03 <1370724210@qq.com>

tests/model_tests/diffusion/test_alignment.py

@@ -83,6 +83,10 @@ EXCLUDED_MODELS = [
     "Gr00tN1d7Pipeline",
     "Pi0Pipeline",
     "SanaWmPipeline",
+    # Audio pipeline conditioned by a separate Qwen2.5-Omni encoder stage;
+    # covered by tests/diffusion/models/auk (CPU pipeline tests, parity) and
+    # the real-checkpoint E2E test instead of a tiny model.
+    "AuKPipeline",
 ]