message: plugin-highlight: review dependencies
diff: import { StatefulPlugin, StateType } from '@edtr-io/core'
  +import { createIcon, faCode } from '@edtr-io/editor-ui'
  import { HighlightEditor } from './editor'
  -import { createIcon, faCode } from '@edtr-io/editor-ui'
  export const highlightState = StateType.object({
  text: StateType.string(''),
  