add netlify-cms (main) package

packages/netlify-cms/webpack.config.js

@@ -0,0 +1,23 @@
+const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin');
+const { getConfig, plugins } = require('../../scripts/webpack.js');
+
+module.exports = {
+  ...getConfig(),
+  plugins: [
+    ...Object.entries(plugins)
+      .filter(([ key ]) => key !== 'friendlyErrors')
+      .map(([ _, plugin ]) => plugin()),
+    new FriendlyErrorsWebpackPlugin({
+      compilationSuccessInfo: {
+        messages: ['Netlify CMS is now running at http://localhost:8080'],
+      },
+    }),
+  ],
+  devServer: {
+    contentBase: './example',
+    watchContentBase: true,
+    quiet: true,
+    host: 'localhost',
+    port: 8080,
+  },
+};