fix: `si.h` and `angular.h` now properly include `hacks.h` to define … #97

Job	Run time
std::format none C++23 GCC-14 Release	1m 46s
std::format none C++23 GCC-14 Debug	1m 54s
std::format none C++23 Clang-18 Release	48s
fmtlib none C++23 GCC-14 Release	1m 51s
fmtlib none C++23 GCC-14 Debug	2m 0s
fmtlib none C++23 Clang-18 Release	46s
	9m 5s

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