ci: create `circle.yml` for builds on Circle CI
ci: create `circle.yml` for builds on Circle CI

See https://circleci.com/gh/dherges/ng-packagr
DavidParks8/ng-packagr,DavidParks8/ng-packagr,dherges/ng-packagr,DavidParks8/ng-packagr,dherges/ng-packagr,dherges/ng-packagr,dherges/ng-packagr,DavidParks8/ng-packagr