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/mainController.ts

@@ -0,0 +1,34 @@
+/*---------------------------------------------------------------------------------------------
+ *  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';
+import { CreateClusterWizard } from './wizards/create-cluster/createClusterWizard';
+
+/**
+ * The main controller class that initializes the extension
+ */
+export class MainController {
+	protected _context: vscode.ExtensionContext;
+
+	public constructor(context: vscode.ExtensionContext) {
+		this._context = context;
+	}
+
+	/**
+	 * Activates the extension
+	 */
+	public activate(): void {
+		vscode.commands.registerCommand('mssql.cluster.create', () => {
+			let wizard = new CreateClusterWizard(this._context);
+			wizard.open();
+		});
+	}
+
+	/**
+	 * Deactivates the extension
+	 */
+	public deactivate(): void { }
+}