Add event header namespace header

src/event/event.hpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2023  Christopher J. Howard
+ *
+ * This file is part of Antkeeper source code.
+ *
+ * Antkeeper source code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Antkeeper source code is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ANTKEEPER_EVENT_HPP
+#define ANTKEEPER_EVENT_HPP
+
+/// Publish-subscribe messaging.
+namespace event {}
+
+#include "event/channel.hpp"
+#include "event/publisher.hpp"
+#include "event/queue.hpp"
+#include "event/subscriber.hpp"
+#include "event/subscription.hpp"
+
+#endif // ANTKEEPER_EVENT_HPP