Add package 'kubeflow-spark-api' into the RHAI pipeline onboarding collection.

The package builds successfully via the AIPCC self-service pipeline and has a compatible license for redistribution.

Summary

Apache-2.0 is OSI Approved, FSF Libre, and matches the permissive pattern — making it fully compatible for redistribution.

License: Apache-2.0
Redistribution Compatible: YES
Reason: Apache-2.0 is a permissive, OSI-approved, FSF-libre license that allows free redistribution, including building and distributing binary wheels for commercial use.