Update CMake to handle ARM64EC with VS Generator (#464) #8

Job	Run time
build (windows-2019, x64-Debug, amd64)	2m 54s
build (windows-2019, x64-Release, amd64)	3m 20s
build (windows-2019, x64-Debug-Clang, amd64)	2m 34s
build (windows-2019, x64-Release-Clang, amd64)	3m 10s
build (windows-2022, x64-Debug, amd64)	2m 19s
build (windows-2022, x64-Release, amd64)	2m 57s
build (windows-2022, x64-Debug-Clang, amd64)	1m 47s
build (windows-2022, x64-Release-Clang, amd64)	3m 21s
build (windows-2019, x86-Debug, amd64_x86)	2m 56s
build (windows-2019, x86-Release, amd64_x86)	3m 6s
build (windows-2019, x86-Debug-Clang, amd64_x86)	2m 19s
build (windows-2019, x86-Release-Clang, amd64_x86)	3m 8s
build (windows-2022, x86-Debug, amd64_x86)	2m 18s
build (windows-2022, x86-Release, amd64_x86)	2m 22s
build (windows-2022, x86-Debug-Clang, amd64_x86)	2m 41s
build (windows-2022, x86-Release-Clang, amd64_x86)	2m 29s
build (windows-2022, arm64-Debug, amd64_arm64)	2m 18s
build (windows-2022, arm64-Release, amd64_arm64)	3m 11s
build (windows-2022, arm64ec-Debug, amd64_arm64)	1m 49s
build (windows-2022, arm64ec-Release, amd64_arm64)	3m 21s
	54m 20s

Provide feedback