new command: easy_config
new command: easy_config

Added the `easy_config`-command.
When executed, a Config-GUI is shown.
Unfortunaly, i am unable to test the GUI (especially the `ColorPicker()`) on different screen-sizes.
Howver, this script does not use any magic numbers, so it *should* work.
Maybe someone can test this?
cclauss/stash,ywangd/stash,ywangd/stash,cclauss/stash