[FEATURE-REQUEST] Support for CKEditor Super Build

I would like `Kaffy` admin to add support for `CKEditor` super build, which comes with a full fledged `richtext` editor, like this:


I had to create a custom `Ecto` `RichTextField`, add `CKEditor` super build CDN to `Kaffy` , followed this guide [Running a full-featured editor from CDN](https://ckeditor.com/docs/ckeditor5/latest/installation/getting-started/quick-start.html#running-a-full-featured-editor-from-cdn) and loaded the plugins config script shown in the above guide as custom `javascripts`, rendering the editor you see in the screenshot.

I can't load `CKEditor` super build under `Kaffy's` custom `javascripts` because it causes conflicts.

So my thought is since `Kaffy` ships with the minimal CKEditor javascript which adds support for `richtext` fields, it would be nice if there is an option to configure which version of `CKEditor` to use, or perhaps `Kaffy` ships with the `CKEditor` super build by default and allow developers to load a custom javascripts describing which plugins or widgets should appear on the editor

Would love to hear your thoughts.