Link decorators

Manual decorators (window.editors.manualDecorators):

1. Should be available for every link.
2. Should be applied to the content only when "Save" was clicked.
3. There should be initially set some decorators over specific links based on source data of the editor:
   • CKEditor5 has: "Open in a new tab"
   • CKSource has: "Open in a new tab" and "Downloadable"
   • CKEditor5 (schemaless) has: "Gallery"
   • ftp address has: "Downloadable"
4. There should be 3 manual decorators available:
   • Open in new a new tab
   • Downloadable
   • Gallery link
5. State of the decorator switches should reflect the model of the currently selected link.
6. Switch buttons should be focusable (with the tab key), after the URL input. The "save" and "cancel" buttons should be focused last.

Automatic decorators (window.editors.automaticDecorators).

1. There should be a default automatic decorator turned on, which adds target="_blank" and rel="noopener noreferrer" attributes to all external links (links starting with http://, https:// or //).
2. There should be no changes to the model or the view of the editors.
3. Decorator data should be added during downcast (run window.editors.automaticDecorators.getData() to see how it works).
4. There are 2 additional decorators in this editor:
   • phone, which detects all links starting with tel: and adds the phone CSS class to such link,
   • internal, which adds the internal CSS class to all links starting with #.