feat(example): `treat_as_floating_point` specializations for examples… #250

Job	Run time
std::format none C++23 GCC-14 Release	1m 20s
std::format none C++23 GCC-14 Debug	1m 30s
std::format none C++23 Clang-18 Release	2m 1s
fmtlib none C++23 GCC-14 Release	1m 23s
fmtlib none C++23 GCC-14 Debug	1m 41s
fmtlib none C++23 Clang-18 Release	1m 56s
	9m 51s

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