Draft: Issue #3422091: Add a further Link field formatter, or extend the existing one, which is able to choose another micon field as icon source

Closes #3422091

modules/micon_link/config/schema/micon_link.schema.yml

@@ -23,6 +23,9 @@ field.formatter.settings.micon_link:
     icon:
       type: string
       label: 'Link icon'
+    use_icon_from_icon_field:
+      type: boolean
+      label: 'Use icon from icon field'
 
 field.widget.settings.micon_link:
   type: mapping