Add ADS Windows support extension with LaunchSsmsDialog command (#4248)

* ADS Windows support extension with LaunchSsmsDialog command

* Update readme

* Fix spacing

* Update download with new file location and name

* Update SsmsMin package with bits from latest RC build and addressed some comments.

* Update extension name. Add Context menu extension for launching server properties dialog. Remove params interface from public API

* Rename folder and update README

* Correct README title

* Fix a few issues and clean up some stuff.

* Update to azdata namespace

* Refactor to use async/await and add some more telemetry

* Add .bat for running extension tests (currently only Notebook) and set up launch.json with 2 new launch configs for running & debugging extension tests.

* Rename files to make it clear these aren't the integration tests

* Update launch.config too

* Fix spacing and missed file name update

* Fix some bugs in buildSsmsMinCommandArgs and add unit tests

extensions/admin-tool-ext-win/src/utils.ts

@@ -0,0 +1,42 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as vscode from 'vscode';
+
+export interface IPackageInfo {
+    name: string;
+    version: string;
+    aiKey: string;
+}
+
+export function getPackageInfo(packageJson: any): IPackageInfo {
+    if (packageJson) {
+        return {
+            name: packageJson.name,
+            version: packageJson.version,
+            aiKey: packageJson.aiKey
+        };
+    }
+}
+
+/**
+ * Get the configuration for a extensionName
+ * @param extensionName The string name of the extension to get the configuration for
+ * @param resource The optional URI, as a URI object or a string, to use to get resource-scoped configurations
+ */
+export function getConfiguration(extensionName?: string, resource?: vscode.Uri | string): vscode.WorkspaceConfiguration {
+    if (typeof resource === 'string') {
+        try {
+            resource = this.parseUri(resource);
+        } catch (e) {
+            resource = undefined;
+        }
+    } else if (!resource) {
+        // Fix to avoid adding lots of errors to debug console. Expects a valid resource or null, not undefined
+        resource = null;
+    }
+    return vscode.workspace.getConfiguration(extensionName, resource as vscode.Uri);
+}