Reduce packaged size of extensions (#4300)

* reduce output of notebooks

* reduce size of azurecore

* update mssql extensions to be webpacked

* formatting

* remove commented code

* fix packaged config

* fix mssql packing

extensions/mssql/extension.webpack.config.js

@@ -0,0 +1,24 @@
+/*---------------------------------------------------------------------------------------------
+ *  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'
+	},
+	externals: {
+		'clipboardy': 'commonjs clipboardy',
+		'dataprotocol-client': 'commonjs dataprotocol-client',
+		'vscode-languageclient': 'commonjs vscode-languageclient',
+		'vscode-extension-telemetry': 'commonjs vscode-extension-telemetry',
+		'request': 'commonjs request',
+	}
+});