chore(github): add release workflow on v3* tags

scripts/release.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Restore all git changes
+git restore -s@ -SW  -- .
+
+# Update token
+if [[ ! -z ${NODE_AUTH_TOKEN} ]] ; then
+  echo "//registry.npmjs.org/:_authToken=${NODE_AUTH_TOKEN}" >> ~/.npmrc
+  echo "registry=https://registry.npmjs.org/" >> ~/.npmrc
+  echo "always-auth=true" >> ~/.npmrc
+  npm whoami
+fi
+
+# Release package
+echo "Publishing @nuxt/ui"
+npm publish --access public