GUIfy install.py for installation and configuration

[mmguero]

Taking the curses-based configuration Python interfaces and augmenting them (NOT replacing them, as we still need text-based configuration for terminal-only, SSH, etc.) with a graphical interface using something cross-platform. So far I really like CustomTkinter but it's up for debate if there's something better.

All of the configuration options need to be covered in a way that makes sense (whether it's a wizard, tabs, whatever).