feat(reflect-cpp): Switched from glaze -> reflect cpp

A bug was discovered in glaze which prevented valid toml output. We have
switched to toml++ and reflect-cpp. The interface has remained the same
so this should not break any code

build-config/reflect-cpp/include/rfl/field_names_t.hpp

@@ -0,0 +1,18 @@
+#ifndef RFL_FIELD_NAMES_T_HPP_
+#define RFL_FIELD_NAMES_T_HPP_
+
+#include <functional>
+#include <type_traits>
+
+#include "internal/get_field_names.hpp"
+
+namespace rfl {
+
+/// Returns a rfl::Literal containing the field names of struct T.
+template <class T>
+using field_names_t = typename std::invoke_result<
+    decltype(internal::get_field_names<std::remove_cvref_t<T>>)>::type;
+
+}  // namespace rfl
+
+#endif