Refactor plugin and switch to UI Patterns module

Problem/Motivation

When I tried to use that module I had to realize that build method of the Embedded Content plugin is actually empty.

Additionally I was seeing that CL Editorial module is being used and when using UI Suite → related modules you will notice a big difference to the form that is provided.

The cool thing about using UI Patterns → is that you will get form modes for components, which allows us to build tailored forms for editors which are e.g. not exposing all the available properties to them.

Proposed resolution

Since there is no working version of this module we could still swap the underlaying way of how to get the configuration form for components.