chore: import upstream snapshot with attribution

samples/sampleNonZeroPlugin/nonZeroKernel.h

@@ -0,0 +1,28 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 1993-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef SAMPLE_NONZERO_KERNEL_H
+#define SAMPLE_NONZERO_KERNEL_H
+
+#include <cuda_fp16.h>
+
+#include <cstdint>
+
+template <typename T>
+void nonZeroIndicesImpl(T const* X, int32_t* indices, int64_t* count, int64_t const* K, int32_t R, int32_t C,
+    bool rowOrder, cudaStream_t stream);
+
+#endif // SAMPLE_NONZERO_KERNEL_H