skuRecommendationPage & azdata change (#11863)

* skuRecommendationPage

* fix

extensions/sql-migration/src/models/externalContract.ts

@@ -0,0 +1,30 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as azdata from 'azdata';
+import { SKURecommendation } from './product';
+
+export interface Base {
+	uuid: string;
+}
+
+export interface BaseRequest extends Base { }
+
+export interface BaseResponse<T> extends Base {
+	error?: string;
+	response: T;
+}
+
+export interface GatherInformationRequest extends BaseRequest {
+	connection: azdata.connection.Connection;
+}
+
+export interface SKURecommendations {
+	recommendations: SKURecommendation[];
+}
+
+export interface GatherInformationResponse extends BaseResponse<SKURecommendations> {
+}
+