feat: add title annotation during oras backup

[AustinAbro321]

What this PR does / why we need it: Adds the full image reference to org.opencontainers.image.title. so that consumers of oras backup directories / archives will be able to know automatically what the image name was during the backup

Which issue(s) this PR fixes
Fixes #1893

Please check the following list:

• Yes Does the affected code have corresponding tests, e.g. unit test, E2E test?
• No Does this change require a documentation update?
• No Does this introduce breaking changes that would require an announcement or bumping the major version?
• NA Do all new files have an appropriate license header?

[FeynmanZhou]

Hi @AustinAbro321 ,

This proposal from @shizhMSFT should help clarify the scenario and define the desired experience to add full image reference to anootations. Would you mind reviewing this PR? #1917

We should implement this with a more holistic design and consider multi-repo backup and restore scenario.

[AustinAbro321]

Yup just gave it a review. It would solve what I'm looking for. Let me know you're preferred next steps.

If you'd like I could implement the --full-reference flag for only single image repositories for now. Otherwise I can wait for the proposal to be merged and for y'all to implement this feature.

[github-actions]

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