Added a run method which is including run methods from different services

src/app/SAB.cpp

@@ -138,3 +138,11 @@ unsigned char SAB::getError() const
 {
   return _error;
 }
+
+void SAB::run()
+{
+  _webServer.run();
+  _ftpServer.run();
+  _taskSchedulerManager.run();
+  _screenManager.run();
+}

src/app/SAB.h

@@ -41,6 +41,7 @@ class SAB
     PowerManager& getPowerManager();
     TimeSpan getUpTime();
     BoardConfig getBoardConfig() const;
+    void run();
     
     const char *getSoftVersion() const;
     unsigned char getError() const;