constexpr uint128_wrapper (#2215)
constexpr uint128_wrapper (#2215)

* constexpr uint128_wrapper

* change FMT_CONSTEXPR to constexpr

* clang format

Co-authored-by: Jake Staahl <f5f517696cd3ccf1ae52ddd92b2c5f45313b8c8b@snapchat.com>
cppformat/cppformat,alabuzhev/fmt,cppformat/cppformat,alabuzhev/fmt,alabuzhev/fmt,cppformat/cppformat