migrate some services from examples to openApi (#9716)

services/clojars/clojars-base.js

services/clojars/clojars-downloads.service.js

services/clojars/clojars-version.service.js

services/f-droid/f-droid.service.js

services/packagist/packagist-base.js

services/packagist/packagist-dependency-version.service.js

services/packagist/packagist-downloads.service.js

services/packagist/packagist-license.service.js

services/packagist/packagist-stars.service.js

services/packagist/packagist-version.service.js

services/piwheels/piwheels-version.service.js

services/vpm/vpm-version.service.js