Transform radicle-link integration test setup (as much as possible) to gitoxide

[Byron]

• A draft for a stability guide #171
• link-git-protocol: upgrade to latest versions of gitoxide crates radicle-dev/radicle-link#776
• cleanup and init a bare repository #185
• Cleanup old 'time' dependency and make local time available #188
• Changes needed to use gitoxide for radicle-link test setup #190
• refresh_odb() to show how pack changes are picked up.
• look into being able to write ObjectRefs exclusively, and convert owned ones into shared ones.
• add remaining git-repository docs
• Core-corrosion: Adding gitoxide to git-protocol integration tests radicle-dev/radicle-link#780

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Archive

• refactorings
  • finally find a good solution for immutable vs mutable naming (which doesn't always work nicely. Ref suffix is a not
    candidate for those with borrows inside. Candidates for massive changes are git-object and git-ref and git-actor. borrow() would then rather be to_ref()
  • rename oid to id like in git2 - depends on the context, maybe another time
  • rename find_existing() to find() and provide the optional version under try_find(), both for objects and refs in plumbing crates
  • [repository] Sketch design of 'Easy' mode #165
  • A draft for a stability guide #171
  • git actor refactor #173
  • git-ref refactor #175
  • git-object refactor #177
  • packetline refactoring #178
  • git-pack refactoring #179
  • git-odb refactoring #180