Export base create config functions (#17007)

build-scripts/rollup.cjs

@@ -142,4 +142,5 @@ module.exports = {
   createCastConfig,
   createHassioConfig,
   createGalleryConfig,
+  createRollupConfig,
 };

build-scripts/webpack.cjs

@@ -253,4 +253,5 @@ module.exports = {
   createCastConfig,
   createHassioConfig,
   createGalleryConfig,
+  createWebpackConfig,
 };