Add Harbor Satellite Adapter to Harbor

[bupd]

Summary

• Adds Harbor Satellite Adapter.

This addition enables seamless integration between Harbor and Harbor Satellite, a project designed to extend Harbor container registry to edge locations.

Context

Harbor Satellite is currently hosted on container-registry/harbor-satellite. It aims to bring Harbor container registries to edge environments, ensuring reliable and integrity-checked images even in challenging connectivity situations. The project provides a stateful, standalone satellite registry that functions as both a primary registry for edge locations and as a fallback option when the central Harbor registry is unavailable.

Why this Adapter

This adapter is essential for Harbor Satellite to effectively communicate and work with the Harbor container registry, allowing users to extend their Harbor ecosystem to edge computing environments.

Looking for feedback and suggestions for further improvements.

Please indicate you've done the following:

• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 46.25%. Comparing base (c8c11b4) to head (57b4051).
Report is 339 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #21298      +/-   ##
==========================================
+ Coverage   45.36%   46.25%   +0.89%     
==========================================
  Files         244      247       +3     
  Lines       13333    13863     +530     
  Branches     2719     2867     +148     
==========================================
+ Hits         6049     6413     +364     
- Misses       6983     7113     +130     
- Partials      301      337      +36     

Flag	Coverage Δ
unittests	46.25% <ø> (+0.89%)	⬆️

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see 491 files with indirect coverage changes