chore: make it production ready

www/.gitignore

@@ -1 +1,3 @@
-node_modules
+/node_modules
+/dist
+!/dist/texture.png

www/webpack.config.js

@@ -7,7 +7,7 @@ module.exports = {
     path: path.resolve(__dirname, 'dist'),
     filename: 'bootstrap.js',
   },
-  mode: 'development',
+  mode: 'production',
   plugins: [
     new CopyWebpackPlugin({
       patterns: [{ from: 'index.html' }],