Implementing Metal3 IPA build pipelien suitable to start releaseing custom Metal3 IPA to public

[Rozzii]

IPA build pipeline has already existed as part of the Fullstack build pipeline. I am working the first refactoring PR to support building and releasing IPA on multiple distros. First PR is just a draft now as I am reorganizing the whole pipeline structure and testing is a bit complicated and not everything works yet: metal3-io/project-infra#1167 , IPA images will land in nordix Artifactory: https://artifactory.nordix.org/artifactory/metal3/images/ipa/staging/centos/ as tarballs and in quay as OCI images.

[Rozzii]

/cc @elfosardo @dtantsur