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/is_empty.hpp

@@ -0,0 +1,25 @@
+#ifndef RFL_INTERNAL_ISEMPTY_HPP_
+#define RFL_INTERNAL_ISEMPTY_HPP_
+
+#include <type_traits>
+
+#include "../Tuple.hpp"
+#include "is_named_tuple.hpp"
+#include "ptr_tuple_t.hpp"
+
+namespace rfl::internal {
+
+template <class T>
+constexpr bool is_empty() {
+  using U = std::remove_cvref_t<std::remove_pointer_t<T>>;
+  if constexpr (is_named_tuple_v<U>) {
+    return U::size() == 0;
+  } else {
+    using TupleType = ptr_tuple_t<U>;
+    return rfl::tuple_size_v<TupleType> == 0;
+  }
+}
+
+}  // namespace rfl::internal
+
+#endif