add additional options flag

src/Umbraco.Web.UI.Client/src/packages/core/extension-registry/models/entity-action.model.ts

@@ -40,6 +40,14 @@ export interface MetaEntityActionDefaultKind extends MetaEntityAction {
 	 * ]
 	 */
 	label: string;
+
+	/**
+	 * The action requires additional input from the user.
+	 * A dialog will prompt the user for more information or to make a choice.
+	 * @type {boolean}
+	 * @memberof MetaEntityActionDefaultKind
+	 */
+	additionalOptions?: boolean;
 }
 
 // DELETE