bookish_admin-1.0.x-dev/modules/bookish_image/bookish_image.ckeditor5.yml

bookish_image_image:
  ckeditor5:
    plugins:
      - bookishImage.BookishImage
    config:
      image:
        toolbar:
          - '|'
          - bookishImageButton
  drupal:
    label: Bookish Image
    library: bookish_image/image-ckeditor
    conditions:
      toolbarItem: uploadImage
      imageUploadStatus: true
    elements:
      - <img data-bookish-image-style>