Consider adding option to copy device info to clipboard

[glopesdev]

For sharing information about rigs and technical debugging it can be useful to extract device information into a text format. Previously this could be done by simply copying the device info from the standard output console, but is harder to do from the purely visual device dialog.

Similar to other hardware configuration interfaces, we could add a button that stores a copy of the currently selected device info to the clipboard so it can be easily shared in documents or conversations.

Later we could extend this to a general device discovery tool if we wanted to export information about all connected Harp devices.