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/internal/variant/result_t.hpp

@@ -0,0 +1,16 @@
+#ifndef RFL_INTERNAL_VARIANT_RESULT_T_HPP_
+#define RFL_INTERNAL_VARIANT_RESULT_T_HPP_
+
+#include <type_traits>
+
+#include "../nth_element_t.hpp"
+
+namespace rfl::internal::variant {
+
+template <class F, class... AlternativeTypes>
+using result_t = std::remove_cv_t<std::invoke_result_t<
+    std::remove_cvref_t<F>, internal::nth_element_t<0, AlternativeTypes...>&>>;
+
+}  // namespace rfl::internal::variant
+
+#endif