Notebook views UI 2 (#15865)

Provide access to the Notebook Views UI. Feature is hidden behind a feature flag.

Co-authored-by: rkselfhost <rkselfhost@outlook.com>

src/sql/workbench/contrib/notebook/browser/notebook.contribution.ts

@@ -349,6 +349,19 @@ configurationRegistry.registerConfiguration({
 	}
 });
 
+configurationRegistry.registerConfiguration({
+	'id': 'notebookViews',
+	'title': localize('notebookViews', 'Notebook Views'),
+	'type': 'object',
+	'properties': {
+		'notebookViews.enabled': {
+			'type': 'boolean',
+			'default': false,
+			'description': localize('notebookViews.enabled', "(Preview) Enable Notebook Views")
+		}
+	}
+});
+
 /* *************** Output components *************** */
 // Note: most existing types use the same component to render. In order to
 // preserve correct rank order, we register it once for each different rank of