introduce data workspace extension (#12046)

* initial commit

* command name

* format file

* update view name

* spacing

* comments

* update yarn.lock

* comments

* Revert "comments"

This reverts commit 3aa7f68edbe87a3312e206df7b162cdd57419dd4.

* address comments

* use built-in icon

extensions/data-workspace/extension.webpack.config.js

@@ -0,0 +1,17 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+//@ts-check
+
+'use strict';
+
+const withDefaults = require('../shared.webpack.config');
+
+module.exports = withDefaults({
+	context: __dirname,
+	entry: {
+		main: './src/main.ts'
+	}
+});