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/to_flattened_ptr_tuple.hpp

@@ -0,0 +1,44 @@
+#ifndef RFL_INTERNAL_TO_FLATTENED_PTR_TUPLE_HPP_
+#define RFL_INTERNAL_TO_FLATTENED_PTR_TUPLE_HPP_
+
+#include "../Tuple.hpp"
+#include "../tuple_cat.hpp"
+#include "has_flatten_fields.hpp"
+#include "is_flatten_field.hpp"
+#include "to_ptr_tuple.hpp"
+
+namespace rfl {
+namespace internal {
+
+template <class PtrTuple>
+auto flatten_ptr_tuple(PtrTuple&& _t) {
+  if constexpr (!has_flatten_fields<PtrTuple>()) {
+    return std::forward<PtrTuple>(_t);
+  } else {
+    const auto get_one = [&]<int _i>(std::integral_constant<int, _i>) {
+      using T = tuple_element_t<_i, std::remove_cvref_t<PtrTuple>>;
+      if constexpr (is_flatten_field_v<T>) {
+        return flatten_ptr_tuple(to_ptr_tuple(rfl::get<_i>(_t)->get()));
+      } else {
+        return rfl::make_tuple(rfl::get<_i>(_t));
+      }
+    };
+
+    constexpr auto size = rfl::tuple_size_v<std::remove_cvref_t<PtrTuple>>;
+
+    return [&]<int... _is>(std::integer_sequence<int, _is...>) {
+      return rfl::tuple_cat(get_one(std::integral_constant<int, _is>{})...);
+    }
+    (std::make_integer_sequence<int, size>());
+  }
+}
+
+template <class T>
+auto to_flattened_ptr_tuple(T&& _t) {
+  return flatten_ptr_tuple(to_ptr_tuple(_t));
+}
+
+}  // namespace internal
+}  // namespace rfl
+
+#endif