Check for terminals ability to display colours
Check for terminals ability to display colours

On serial connections, with weird terminal emulators or when run interactively
the terminal may not support colours this would cause the dev_setup to
be aborted. This adds a simple check for terminal colors.

"-1" for no color support was empirically established.

MycroftAI/mycroft-core,Dark5ide/mycroft-core,MycroftAI/mycroft-core,forslund/mycroft-core,forslund/mycroft-core,Dark5ide/mycroft-core