Create thread context for the main thread.

We probably should also do it for any random thread... but this
mostly would be to prevent crashes... as there's no Alepha thread
object associated with the

Thread.cc

@@ -90,6 +90,11 @@ namespace Alepha::Hydrogen::detail::Thread_m
 		state()->interruption_point();
 	}
 
+	static auto init= Utility::enroll <=[]
+	{
+		state()= std::make_shared< ThreadState >();
+	};
+
 	struct Thread::Impl
 	{
 		std::thread thr;