Foundation CKEditor Yaml extension?

For using CKeditor within TYPO3 CMS I would be interested in getting the Foundation css / or parts of it included into the CKEeditor/Yaml.

There used to be an add-on for it but that seems to be offline (https://ckeditor.com/cke4/addon/foundationButtons)
Anyone (using TYPO3) willing to share some best practises on how to get this working? Yaml file or sample would be great. Or a link towards a clear how to would be great as well! Thanks in advance.

Not sure if this would be helpful: https://ckeditor.com/cke4/addon/include-css-js

But I think the current version of TinyMCE in TYPO3 is newer (> 5).

Thanks. Saw that addon after posting this question. I’m not sure what version TYPO3 for version 9 or even 10 uses for the CKEditor.
Any other ideas out there?