workflow: add dev-esm script [ci skip]

Author: yyx990803

package.json

@@ -18,6 +18,7 @@
     "test-coverage": "node scripts/build.js vue -f global -d && jest --runInBand --coverage --bail",
     "release": "node scripts/release.js",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
+    "dev-esm": "node scripts/dev.js -if esm-bundler-runtime",
     "dev-compiler": "run-p \"dev template-explorer\" serve",
     "dev-sfc": "run-p \"dev compiler-sfc -f esm-browser\" \"dev vue -if esm-bundler-runtime \" serve-sfc-playground",
     "serve-sfc-playground": "vite packages/sfc-playground --host",