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/define_variant.hpp

@@ -0,0 +1,15 @@
+#ifndef RFL_DEFINEVARIANT_HPP_
+#define RFL_DEFINEVARIANT_HPP_
+
+#include <variant>
+
+#include "internal/define_variant.hpp"
+
+namespace rfl {
+
+template <class... Vars>
+using define_variant_t = typename internal::define_variant<Vars...>::type;
+
+}  // namespace rfl
+
+#endif  // RFL_DEFINEVARIANT_HPP_