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/default.hpp

@@ -0,0 +1,14 @@
+#ifndef RFL_DEFAULT_HPP_
+#define RFL_DEFAULT_HPP_
+
+namespace rfl {
+
+/// Helper class that can be passed to a field
+/// to trigger the default value of the type.
+struct Default {};
+
+inline static const auto default_value = Default{};
+
+}  // namespace rfl
+
+#endif