invoke webpack when bundling extensions

extensions/git/extension.webpack.config.js

@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+const path = require('path');
+
+module.exports = {
+	mode: 'none',
+	target: 'node',
+	context: __dirname,
+	entry: {
+		main: './out/main.js',
+		askpass: './out/askpass-main.js'
+	},
+	output: {
+		filename: '[name].bundle.js',
+		path: path.join(__dirname, 'dist'),
+		libraryTarget: "commonjs"
+	},
+	externals: {
+		'vscode': 'commonjs vscode',
+	},
+	stats: 'errors-only'
+};