Add sample for server reports (#960)

* add sample for server reports

* add license and headers for all samples

* add new icons for sp_whoisactive

* address comments and use sqlops node module

samples/serverReports/src/controllers/mainController.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.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+import * as sqlops from 'sqlops';
+import * as Utils from '../utils';
+import ControllerBase from './controllerBase';
+import * as fs from 'fs';
+import * as path from 'path';
+
+/**
+ * The main controller class that initializes the extension
+ */
+export default class MainController extends ControllerBase {
+    // PUBLIC METHODS //////////////////////////////////////////////////////
+    /**
+     * Deactivates the extension
+     */
+    public deactivate(): void {
+        Utils.logDebug('Main controller deactivated');
+    }
+
+    public activate(): Promise<boolean> {
+        return Promise.resolve(true);
+    }
+}
+