[Plugin: Prettify For WordPress] Works but… no settings menu without ThemeKit?

Hello,

As said in the title, I managed to make the plugin work, but no options show in the Settings Menu.
According to the screenshots, there should be one menu for the plugin.

I took a look at the code, and it doesn’t look like there’s any menu added unless I use ThemeKit. Is there a way to get the options without installing ThemeKit?

Thanks in advance.

https://www.ads-software.com/extend/plugins/prettify-wordpress/