archinstall.list_keyboard_languages(), archinstall.search_keyboard_layout() and archinstall.set_keyboard_language() work together to help listing, finding and setting a keyboard layout in terminals. Won't work for X-frontends, but will do for CLI installation methods. Added a language selector-helper-function with a crude search functionality. Added all this to the guided template.
will 'verify' that the installation is complete after leaving the installer, or warn the scripter/programmer/user that there's steps missing in order to complete the installation. This is a step towards combating root being disabled and sudo users forgotten to be created - to avoid total account lockout.