Add focus function for modelview components (#8348)

* Add focus method for modelview components

* Remove focus properties from table and radiobutton

* Fix break

src/sql/platform/model/browser/modelViewService.ts

@@ -31,4 +31,5 @@ export interface IModelView extends IView {
 	onEvent: Event<IModelViewEventArgs>;
 	validate(componentId: string): Thenable<boolean>;
 	readonly onDestroy: Event<void>;
+	focus(componentId: string): void;
 }