copy opencvsharp stuff to test folder #35

Job	Run time
Test OpenCvSharp (ubuntu.24.04, x64, ubuntu-24.04)	10s
Test OpenCvSharp (win11, x64, windows-2025)	32s
Test OpenCvSharp (linux, x64, ubuntu-22.04)	13s
Test OpenCvSharp (linux, arm64, ubuntu-22.04-arm)	21s
Test OpenCvSharp (win, x86, windows-2022)	58s
Test OpenCvSharp (osx, x64, macos-13)	22s
Test OpenCvSharp (win, arm64, windows-11-arm)	28s
Test OpenCvSharp (ubuntu.24.04, arm64, ubuntu-24.04-arm)	21s
Test OpenCvSharp (win, x64, windows-2022)	28s
Test OpenCvSharp (osx.15, arm64, macos-15)	10s
Test OpenCvSharp (osx, arm64, macos-14)	13s
	4m 16s

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