Before I reinvent the wheel I was wondering if anyone has tried creating a custom plugin (button) for CKeditor to handle a quick inline link (internal links within the site)? This would work something along the lines of how Wordpress does inline links with a quick search tool. Very neat and simple with few clicks. Even better if it can be done with a floating UI like this:https://www.youtube.com/watch?v=Mh0nR9_hW4M...

I found this CKeditor plugin but after some trial and error I couldn't get it working. The doco is non-existent and development has stopped 3 years ago:
https://ckeditor.com/cke4/addon/internallink...

Anyone been mad enough to try this?

PS. I've also already read these pages:
https://documentation.concrete5.org/developers/working-with-blocks/c...
https://documentation.concrete5.org/developers/interface-customizati...