Feature/private core module #5744

Job	Run time
Build sdist and set version	34s
Build and test in Conda (ubuntu)	2m 44s
Build and test in Conda (windows)	6m 24s
build-cpp-test-linux (debug, gcc)	18m 28s
build-cpp-test-linux (debug, clang)	11m 29s
build-cpp-test-linux (release, gcc)	24m 5s
build-cpp-test-linux (release, clang)	18m 19s
build-cpp-test-windows (debug, msvc)	12m 42s
build-cpp-test-windows (debug, clang-cl)	17m 11s
build-cpp-test-windows (release, msvc)	18m 9s
build-cpp-test-windows (release, clang-cl)	18m 46s
build-cpp-test-macos (debug)	16m 4s
build-cpp-test-macos (release)	9m 42s
build-and-test-python (linux-x64)	10m 33s
build-and-test-python (linux-aarch64)	23m 25s
build-and-test-python (macos)	7m 10s
build-and-test-python (windows)	15m 27s
publish-wheels	3s
	3h 51m 15s

Provide feedback