Reduced and improved logging

- removed unnecessary logging
- print start date and time when application starts
- use std::cout instead of qDebug()
- better logging in DroneController classes
- renamed Controller states for better readability

src/main.cpp

@@ -1,3 +1,5 @@
+#include <ctime>
+
 #include <QCoreApplication>
 #include <QDebug>
 #include <QFile>
@@ -8,6 +10,13 @@
 
 int main(int argc, char *argv[])
 {
+    // Add current data and time for easier log handling.
+    std::cout << "\n#################################################\n";
+    std::time_t currentTime = std::time(nullptr);
+    std::tm* localTime = std::localtime(&currentTime);
+    std::cout << "Starting autopilot program at " << std::put_time(localTime, "%Y-%m-%d %H:%M:%S") << std::endl;
+    std::cout << "#################################################\n";
+
     // This is needed to have main event loop and signal-slot events in the AzDroneController.
     QCoreApplication a(argc, argv);