Update product references from 'sqlops' to 'azdata' (#4259)

* Update extensions to use azdata

* Switch core code to use azdata

src/sql/azdata.test.d.ts

@@ -0,0 +1,23 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+// This is the place for APIs used for testing
+
+import * as core from 'azdata';
+import * as vscode from 'vscode';
+
+declare module 'azdata' {
+
+	export namespace extensions {
+		export function install(vsixPath: string): Thenable<string>;
+	}
+
+	export namespace objectexplorer {
+		/**
+		 * get object explorer node context menu actions
+		 */
+		export function getNodeActions(connectionId: string, nodePath: string): Thenable<string[]>;
+	}
+}