Some general code cleanup

server/src/ShutdownHelper.cpp

@@ -45,6 +45,10 @@ void ts::server::shutdownInstance(const std::string& message) {
     mainThreadActive = false;
 }
 
+bool ts::server::isShuttingDown() {
+    return shuttingDown;
+}
+
 std::shared_ptr<server::ShutdownData> currentShutdown = nullptr;
 std::shared_ptr<server::ShutdownData> server::scheduledShutdown() { return currentShutdown; }