Support ReSharper C++ builtins for type/enumerator name

[Smertig]

In ReSharper C++ we have our own constexpr evaluation engine. However, getting enumerator or type name with __PRETTY_FUNCTION__ hacks slows down perfomance of its on-the-fly code analysis. For example, resolving of std::array<int, magic_enum::enum_count<SomeEnum>()> requires bruteforcing of all enum names in range [MAGIC_ENUM_RANGE_MIN, MAGIC_ENUM_RANGE_MAX] leading to enormous number of template instantiations and constexpr calculations.

Since upcoming 2023.1 version ReSharper has builtins, that can be used to get type name or enumerator name directly: __rscpp_type_name<T>() and __rscpp_enumerator_name(value). They greatly speed up evaluation of all n<T>() and n<E, V>() internal functions.

[Neargye]

Thanks!