Seed Core_IO from doc snapshot

tjp/core/io/Exception.h

@@ -0,0 +1,14 @@
+// License: Modified MIT (NON-AI)
+// See the LICENSE file in the root directory for license information.
+// Copyright 2025 Timothy Prepscius
+
+#pragma once
+
+#include <tjp/core/exception/Exception.hpp>
+
+namespace tjp::core::io {
+
+DECLARE_EXCEPTION(Exception);
+
+} // namespace
+