Add a workflow to help users without Dockerfile

[divyansh42]

Burr Sutter has a use case where he wants to have a copy and paste workflow at someplace so that users (students) who don't have a handy Dockerfile can use this workflow to deploy on OpenShift.
His idea is to have a workflow with actions s2i-build, push-to-registry(push to ghcr.io), oc-login, oc-new-app.

[divyansh42]

He also wants to have a getting started guide documented with all the steps for newbies who don't have notable experience with the GitHub actions, as he is planning all these for teaching OpenShift newbies.