[nostalgia] Break part of core out into Turbine and TeaGBA libraries

src/turbine/event.cpp

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2016 - 2023 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#include "context.hpp"
+#include "event.hpp"
+
+namespace turbine {
+
+void setUpdateHandler(Context &ctx, UpdateHandler h) noexcept {
+	ctx.updateHandler = h;
+}
+
+}