Document GPU kernel audit progress

PerfectNumbers.Core/Gpu/Kernels/Pow2MontgomeryKernels.cs

@@ -0,0 +1,17 @@
+using ILGPU;
+using ILGPU.Runtime;
+
+namespace PerfectNumbers.Core.Gpu;
+
+internal static class Pow2MontgomeryKernels
+{
+    public static void Pow2MontgomeryKernel(
+        Index1D index,
+        ArrayView1D<ulong, Stride1D.Dense> exponents,
+        MontgomeryDivisorData divisor,
+        byte keepMontgomery,
+        ArrayView1D<ulong, Stride1D.Dense> results)
+    {
+        results[index] = ULongExtensions.Pow2MontgomeryModWindowedKernel(exponents[index], divisor, keepMontgomery != 0);
+    }
+}