refactor examples and tests #814

Job	Run time
clang-format	19s
linux_clang-14_cuda-11.2_debug_analysis	15m 51s
windows_cl-2022_debug_analysis	2h 30m 58s
macos_xcode-14.2_debug_analysis	23m 15s
linux_gcc-12_debug_analysis	18m 39s
macos_xcode-14.2_release	23m 16s
macos_xcode-14.3.1_debug	19m 53s
windows_cl-2022_release	2h 28m 6s
windows_cl-2022_debug	2h 25m 37s
linux_gcc-9_debug	19m 56s
linux_gcc-12_release_c++20	17m 28s
linux_gcc-13_debug	19m 31s
linux_clang-10_release	13m 11s
linux_clang-12_release	36m 5s
linux_clang-13_debug	11m 30s
linux_clang-16_debug_ubsan	15m 9s
linux_clang-16_debug_tsan	13m 14s
	11h 31m 58s

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