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/fields.hpp

@@ -0,0 +1,17 @@
+#ifndef RFL_FIELDS_HPP_
+#define RFL_FIELDS_HPP_
+
+#include "internal/get_meta_fields.hpp"
+#include "named_tuple_t.hpp"
+
+namespace rfl {
+
+/// Returns meta-information about the fields.
+template <class T>
+auto fields() {
+  return internal::get_meta_fields<named_tuple_t<T>>();
+}
+
+}  // namespace rfl
+
+#endif