Fix "Unknown Processor" on Windows if WMIC is not present

[alastairlundy]

This PR fixes #2747 by adding the WmiLightCpuDetector detector class that detects CPU info using the WmiLight library.

This PR also updates WmicCpuDetector to also check for the presence of WMIC.exe at the expected file path to check for applicability so that it isn't used on systems without WMIC.exe .

The output is as expected when tested. For testing I used the BenchmarkDotNet Samples project.

// * Summary *

BenchmarkDotNet v0.15.1-develop (2025-06-04), Windows 11 (10.0.26100.4061/24H2/2024Update/HudsonValley)
12th Gen Intel Core i7-1270P 2.20GHz, 1 CPU, 16 logical and 12 physical cores
.NET SDK 9.0.300
  [Host]     : .NET 8.0.16 (8.0.1625.21506), X64 RyuJIT AVX2 [AttachedDebugger]
  DefaultJob : .NET 8.0.16 (8.0.1625.21506), X64 RyuJIT AVX2

[alastairlundy]

@dotnet-policy-service agree

[timcassell]

LGTM, but I'll let @AndreyAkinshin be the final judge here.