Add webpack for js development

webpack.config.js

@@ -0,0 +1,10 @@
+const path = require('path');
+
+module.exports = {
+    mode: 'production',
+    entry: './jumpapp/assets/js/src/index.js',
+    output: {
+        filename: 'index.js',
+        path: path.resolve(__dirname, './jumpapp/assets/js/'),
+    },
+};