Create publish job for github-actions

Publishing happens through gh-pages branch:
```
yarn publish-pkgs -s "opentelekomcloud/opentelekomcloud-node-driver-extension" -b "gh-pages"
git checkout gh-pages
git rm -rf . ':!/tmp/*'
cp -r ../tmp/* .
git add .
git commit -m "Publish OpenTelekomCloud Node driver extension v1.1.1"
git push origin gh-pages
```

good to automate this process
https://extensions.rancher.io/extensions/next/publishing