Add NativeMemory.ZeroMemory API

[Sergio0694]

Closes #63547

This PR adds the following API:

namespace System.Runtime.InteropServices;

public static class NativeMemory
{
    public static void ZeroMemory(void* ptr, nuint byteCount);
}

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Issue Details

---

Closes #63547

This PR adds the following API:

namespace System.Runtime.InteropServices;

public static class NativeMemory
{
    public static void ZeroMemory(void* ptr, nuint byteCount);
}

Author:	Sergio0694
Assignees:	-
Labels:	area-System.Runtime.InteropServices, new-api-needs-documentation
Milestone:	-

[AaronRobinsonMSFT]

Failure is #66625.