set upstream tasks for harbor / registry contributions

Summarize the possible contributions we want to have in upstream Harbor.

Things to fill out:

• High-level project description (2-3 lines):

• Need/task/work description (15-20 lines), we should mention all of them:

Required skills (maybe split in required/nice to have):

Seniority:

Estimated amount of work: 3 FTE months

added A-registry p2 labels

changed iteration to Kubernetes Sprints Mar 19, 2025 - Apr 1, 2025

assigned to @akothiwa

https://docs.google.com/document/d/11V_NlJHBT87s9uXO_ZOmZppppujpMIx81zlOJRkcF_c/edit?tab=t.0#heading=h.kkzhtf2drymu