C++26 reflection based implementation #560

Job	Run time
windows (msvc-14.3, 14,17,20,latest, 64, windows-2025, -j3)	13m 40s
posix (clang-19, 20,23, ubuntu-24.04, clang-19 llvm-19 libclang-rt-19-dev libc++-19-dev libc++abi...	7m 41s
windows (gcc, 03,11,14,17,2a, 64, windows-2025, -j3)	8m 2s
posix (gcc-11, 03,11,14,17,2a, ubuntu-22.04, cxxflags=--coverage -fsanitize=address,leak,undefine...	5m 22s
windows (msvc-14.3, 20,latest, 64, windows-2022, -j1)	15m 51s
posix (gcc-12, 03,11,14,17,2a, ubuntu-22.04, cxxflags=--coverage -fsanitize=address,leak,undefine...	6m 13s
posix (gcc-14, 03,11,14,17,20, ubuntu-24.04)	4m 35s
posix (clang-15, 03,11,14,17,20, ubuntu-22.04)	5m 33s
posix (clang-18, 03,11,14,17,20,23, ubuntu-24.04)	9m 4s
posix (gcc-10, 03,11,14,17,2a, ubuntu-22.04, cxxflags=--coverage -fsanitize=address,leak,undefine...	5m 11s
finish	4s
	1h 21m 16s

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