build: npm run build

See https://github.com/openedx/edx-platform/blob/master/docs/decisions/0017-reimplement-asset-processing.rst

Part of: #31604

package.json

@@ -4,6 +4,8 @@
   "repository": "https://github.com/openedx/edx-platform",
   "scripts": {
     "postinstall": "scripts/copy-node-modules.sh",
+    "build": "echo 'WARNING: `npm run build` in edx-platform is experimental. Use at your own risk.' && npm run webpack && npm run compile-sass",
+    "build-dev": "echo 'WARNING: `npm run build-dev` in edx-platform is experimental. Use at your own risk.' && npm run webpack-dev && npm run compile-sass-dev",
     "webpack": "NODE_ENV=${NODE_ENV:-production} \"$(npm bin)/webpack\" --config=${WEBPACK_CONFIG_PATH:-webpack.prod.config.js}",
     "webpack-dev": "NODE_ENV=development \"$(npm bin)/webpack\" --config=webpack.dev.config.js",
     "compile-sass": "scripts/compile_sass.py --env=${NODE_ENV:-production}",