[libc][math] Refactor fmaximum_num-fminimum_num family to header-only (#194562)
Refactors the fmaximum_num-fminimum_num math family to be header-only.
part of: #147386
Target Functions:
- fmaximum_num
- fmaximum_numbf16
- fmaximum_numf
- fmaximum_numf128
- fmaximum_numf16
- fmaximum_numl
- fminimum_num
- fminimum_numbf16
- fminimum_numf
- fminimum_numf128
- fminimum_numf16
- fminimum_numl