Add grid streaming support for notebooks (#12175)

* add onResultUpdate handler in gridoutput

* convert rows to mimetype and html

* wait for data conversion to finish before saving

* detach changeRef after output is created

* fix save grid action

* move data conversion check to each cell

* move conversion logic to dataprovider

* notify data converting when user saves

* add comments and remove unused methods

* fix method return type

* fix tests

* fix convertData method header

* move azdata changes to azdata proposed

* address PR comments

* display top rows message

* fix messages/table ordering and query 100 rows

* add missing escape import

* set default max rows to 5000

* add undefined check to updateResultSet

* change gridDataConversionComplete return type

src/sql/workbench/contrib/notebook/test/stubs.ts

@@ -43,6 +43,9 @@ export class NotebookModelStub implements INotebookModel {
 	get sessionLoadFinished(): Promise<void> {
 		throw new Error('method not implemented.');
 	}
+	get gridDataConversionComplete(): Promise<any[]> {
+		throw new Error('method not implemented.');
+	}
 	get notebookManagers(): INotebookManager[] {
 		throw new Error('method not implemented.');
 	}