Please auto-select communication port - add logic to baud rate selection.

When switching between USB cable and USB telemetry, one needs to open the dialog, select device, select baudrate.
When a new device is connected - and no connection is established - switch to it.
Then if ttyACM\* is connected, or manually selected from droplist, suggest 115200 , if ttyUSB\* - select 57600.

Start by locating the communication-port dialog, device enumeration, and baud-rate selection logic in the Qt application. Trace what happens when a device is connected while no connection exists, then verify the requested ttyACM* and ttyUSB* baud-rate suggestions and manual device selection. Done means the correct device and baud rate are selected or suggested in each described case.

Written by the indexing model from the issue text.