docs: "API Reference" support added #144

Job	Run time
std::format none C++20 Clang-18 Release	2m 40s
std::format none C++20 Clang-18 Debug	3m 3s
std::format none C++23 Clang-18 Release	2m 30s
std::format none C++23 Clang-18 Debug	3m 48s
std::format gsl-lite C++20 Clang-18 Release	2m 47s
std::format gsl-lite C++20 Clang-18 Debug	4m 36s
std::format gsl-lite C++23 Clang-18 Release	2m 28s
std::format gsl-lite C++23 Clang-18 Debug	3m 2s
std::format ms-gsl C++20 Clang-18 Release	2m 37s
std::format ms-gsl C++20 Clang-18 Debug	3m 10s
std::format ms-gsl C++23 Clang-18 Release	2m 35s
std::format ms-gsl C++23 Clang-18 Debug	3m 50s
fmtlib none C++20 Clang-18 Release	6m 36s
fmtlib none C++20 Clang-18 Debug	6m 13s
fmtlib none C++23 Clang-18 Release	6m 24s
fmtlib none C++23 Clang-18 Debug	5m 55s
fmtlib gsl-lite C++20 Clang-18 Release	7m 5s
fmtlib gsl-lite C++20 Clang-18 Debug	6m 21s
fmtlib gsl-lite C++23 Clang-18 Release	6m 31s
fmtlib gsl-lite C++23 Clang-18 Debug	6m 18s
fmtlib ms-gsl C++20 Clang-18 Release	6m 58s
fmtlib ms-gsl C++20 Clang-18 Debug	6m 22s
fmtlib ms-gsl C++23 Clang-18 Release	6m 29s
fmtlib ms-gsl C++23 Clang-18 Debug	6m 3s
	1h 54m 21s

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