LibTimeZone: Parse ZONE entries from the TZDB and generate their names

Userland/Libraries/LibTimeZone/TimeZone.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2022, Tim Flynn <trflynn89@pm.me>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Optional.h>
+#include <AK/StringView.h>
+#include <LibTimeZone/Forward.h>
+
+namespace TimeZone {
+
+Optional<TimeZone> time_zone_from_string(StringView time_zone);
+
+}