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/extract_discriminators.hpp

@@ -0,0 +1,20 @@
+#ifndef RFL_EXTRACTDISTRIMINATORS_HPP_
+#define RFL_EXTRACTDISTRIMINATORS_HPP_
+
+#include <type_traits>
+
+#include "TaggedUnion.hpp"
+#include "define_literal.hpp"
+#include "field_type.hpp"
+#include "internal/extract_discriminators.hpp"
+
+namespace rfl {
+
+/// Extracts a Literal containing all of the discriminators from a TaggedUnion.
+template <class TaggedUnionType>
+using extract_discriminators_t =
+    typename internal::extract_discriminators<TaggedUnionType>::type;
+
+}  // namespace rfl
+
+#endif  // RFL_EXTRACTDISTRIMINATORS_HPP_