BVT

Add CxPlatAsync to simplify creating threads with cxplat #137

Job	Run time
Build MacOs (Debug, macos, macos-12, x64) / Build	32s
Build MacOs (Release, macos, macos-12, x64) / Build	40s
Build Ubuntu (Debug, linux, ubuntu-20.04, x64) / Build	2m 31s
Build Ubuntu (Debug, linux, ubuntu-22.04, x64) / Build	3m 4s
Build Ubuntu (Release, linux, ubuntu-20.04, x64) / Build	2m 36s
Build Ubuntu (Release, linux, ubuntu-22.04, x64) / Build	2m 42s
Build WinUser (Debug, windows, windows-2022, x64) / Build	1m 50s
Build WinUser (Release, windows, windows-2022, x64) / Build	1m 4s
Build WinKernel (Debug, winkernel, windows-2022, x64) / Build	1m 41s
Build WinKernel (Release, winkernel, windows-2022, x64) / Build	1m 45s
BVT Kernel (Debug, winkernel, windows-2022, x64)	23s
BVT Kernel (Release, winkernel, windows-2022, x64)	23s
BVT (Debug, linux, ubuntu-20.04, x64)	1m 0s
BVT (Release, linux, ubuntu-20.04, x64)	43s
BVT (Debug, linux, ubuntu-22.04, x64)	35s
BVT (Release, linux, ubuntu-22.04, x64)	49s
BVT (Debug, windows, windows-2019, x64)	15s
BVT (Release, windows, windows-2019, x64)	13s
BVT (Debug, windows, windows-2022, x64)	17s
BVT (Release, windows, windows-2022, x64)	18s
BVT (Debug, macos, macos-12, x64)	3m 9s
BVT (Release, macos, macos-12, x64)	3m 3s
Complete	0s
	29m 33s

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