LEAH-1884: DeviceController improvement
- Fixed an issue in the VTreatmentRanges if the config file has not read successfully and the dialysate flow rate is set to zero.
- Added the WiFiList device model to the Device management.
- Added MVC for the WiFi List scan.
- Added the readyReadStandard{out/err} to get the executed in-progress script output, to help communicate with the script during execution. [ Update progress to be sent to the application during execution.]
- Added the mCompleted to the DeviceModels to detect when the execution of the progress is complete and it is not the intermittent communication during the execution.
