Added thirdparty: boost library

thirdparty/include/boost/cobalt/main.hpp

@@ -0,0 +1,45 @@
+// Copyright (c) 2022 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_COBALT_MAIN_HPP
+#define BOOST_COBALT_MAIN_HPP
+
+#include <boost/cobalt/concepts.hpp>
+#include <boost/cobalt/this_coro.hpp>
+
+#include <boost/asio/io_context.hpp>
+
+
+
+#include <coroutine>
+#include <optional>
+
+namespace boost::cobalt
+{
+
+namespace detail { struct main_promise; }
+class main;
+
+}
+
+auto co_main(int argc, char * argv[]) -> boost::cobalt::main;
+
+namespace boost::cobalt
+{
+
+class main
+{
+  detail::main_promise * promise;
+  main(detail::main_promise * promise) : promise(promise) {}
+  friend auto ::co_main(int argc, char * argv[]) -> boost::cobalt::main;
+  friend struct detail::main_promise;
+};
+
+}
+
+
+
+#include <boost/cobalt/detail/main.hpp>
+
+#endif //BOOST_COBALT_MAIN_HPP