Improve Serial Port Detection

tockloader automatically searches for any serial ports with the string "tock"
in the information returned by serial ports.

This release adds the -d/--device-name flag, which allows users change this
search string to search for more specific devices.

Previously, if the search was ambiguous, tockloader would simply choose the
first device arbitrarily. Now it presents an interactive menu.

Other features:

• When possible, check that the binary was compiled with all required flags
• Terminals will retitle based on active connections