Display notification when the FTDI driver is unavailable

[zfi]

The BlocklyProp Client is able to detect the current state of the FTDI driver; whether it is installed and if it is currently loaded and running. Add a dialog to notify the user when the FTDI driver is either not installed or if the driver is not running.

Specifically, evaluate that the FTDI driver is installed during app start-up. Test the run state of the FTDI driver prior to attempting a code load activity.

[PropGit]

This is an additional step after Issues #35. #37. #38. and #39.