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/parsing/supports_attributes.hpp

@@ -0,0 +1,29 @@
+#ifndef RFL_PARSING_SUPPORTSATTRIBUTES_HPP_
+#define RFL_PARSING_SUPPORTSATTRIBUTES_HPP_
+
+#include <concepts>
+#include <string_view>
+
+#include "../Result.hpp"
+
+namespace rfl {
+namespace parsing {
+
+/// Determines whether a writer supports attributes.
+template <class W>
+concept supports_attributes = requires(W w, std::string_view name,
+                                       typename W::OutputObjectType obj,
+                                       bool is_attribute) {
+  {
+    w.add_value_to_object(name, name, &obj, is_attribute)
+    } -> std::same_as<typename W::OutputVarType>;
+
+  {
+    w.add_null_to_object(name, &obj, is_attribute)
+    } -> std::same_as<typename W::OutputVarType>;
+};
+
+}  // namespace parsing
+}  // namespace rfl
+
+#endif