Feature/bdc create (#4012)

* initial checkin

* rename

* wizard pages

* target cluster radio button group

* resource strings

* existing cluster picker

* revert changes to unwanted file

* revert unwanted changes-2

* update cluster icon

* settings page

* fix group container

* hyperlink component

* address review comments

* comments part 2

extensions/big-data-cluster/src/main.ts

@@ -0,0 +1,21 @@
+/*---------------------------------------------------------------------------------------------
+ *  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 vscode = require('vscode');
+import { MainController } from './mainController';
+export let controller: MainController;
+
+export function activate(context: vscode.ExtensionContext) {
+	controller = new MainController(context);
+	controller.activate();
+}
+
+// this method is called when your extension is deactivated
+export function deactivate(): void {
+	if (controller) {
+		controller.deactivate();
+	}
+}