Added struct UpdateStatus for printing debug messages. Added member variables used for sending SENDCMD to ISMAS.A Added helper functions getATBQTVersion(), getCPUSerial(), getRaucVersion(), getOpkgVersion(), getPluginVersion(), getDCVersion(), getFileSize().
Simplified interface. Read machine_nr, cust_nr, zone_nr from file.
Worker uses event-loop of worker-thread. Worker itself is used as work-horse for the update-process.