Extract CK Plugin and Commands into npm module

[Sebobo]

So the rest of the CK community could use and improve it too.

[georgringer]

@Sebobo do you still think about doing that? would love that as I could use it within TYPO3 then ^^

[Sebobo]

Hi Georg,

yes I want to do that. If there is interest and you can help me with testing the whole thing we can do that :)

[georgringer]

testing could be done for sure - as I am completly new into writing plugins for ckeditor and my only plugins for 4 have more or less been shameless copy pasting I am not sure if I can help with coding directly