Provide namespaced CMake targets #3546

Job	Run time
Ubuntu (linux, ubuntu-24.04, x64, openssl3, -UseXdp) / Build	3m 3s
Ubuntu (linux, ubuntu-20.04, x64, openssl) / Build	3m 3s
Ubuntu (linux, ubuntu-22.04, x64, openssl3) / Build	2m 56s
Windows (windows, windows-2022, x64, openssl3) / Build	5m 35s
Windows (windows, windows-2022, x64, openssl) / Build	4m 46s
Build All Darwin Frameworks / Build Darwin Binaries (ios, arm64) / Build	3m 34s
Build All Darwin Frameworks / Build Darwin Binaries (ios, x64) / Build	3m 3s
Build All Darwin Frameworks / Build Darwin Binaries (macos, arm64) / Build	3m 34s
Build All Darwin Frameworks / Build Darwin Binaries (macos, x64) / Build	2m 48s
Build All Darwin Frameworks / Build Universal Binaries	21s
Build All Darwin Frameworks / Build Darwin Framework (ios, x64)	17s
Build All Darwin Frameworks / Build Darwin Framework (ios, arm64)	39s
Build All Darwin Frameworks / Build Darwin Framework (macos, universal)	33s
Build All Darwin Frameworks / Build Darwin XCFramework	43s
DotNet Test (windows, windows-2022, x64, openssl)	1m 49s
DotNet Test (windows, windows-2022, x64, openssl3)	1m 53s
DotNet Test (linux, ubuntu-20.04, x64, openssl)	1m 31s
DotNet Test (linux, ubuntu-22.04, x64, openssl3)	1m 46s
DotNet Test (linux, ubuntu-24.04, x64, openssl3, -UseXdp)	1m 29s
DotNet Test (macos, macos-13, universal, openssl)	32s
	43m 55s

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