- 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
When the application is started with the command parameter "plane", the
application uses the AzDroneControllerPlane class to control
initialisation. It doesn't arm or takeoff the drone. Instead, it waits
for the user to mode to AUTO (in Ardupilot, Mission in MAVSDK) with the
RC controller. When AUTO mode has been detected, the application will
start a normal mission handling.