Rename IKeyVaultResource and IKeyVaultSecretReference

[eerhardt]

Using the Azure prefix, as we do this everywhere else.

Contributes to #7811

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
• Are you including unit tests for the changes and scenario tests if relevant?
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
• Does the change make any security assumptions or guarantees?
  • No
• Does the change require an update in our Aspire docs?
  • No

[Copilot]

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

[eerhardt]

@davidfowl - Do you want to do this rename? It is pretty small, but it makes the API more consistent.

[danmoseley]

Oh, oops I missed the question.

[danmoseley]

/backport to release/9.2

[github-actions]

Started backporting to release/9.2: https://github.com/dotnet/aspire/actions/runs/14254016197

[eerhardt]

Oh, oops I missed the question.

No worries. We are doing this. Executive decision.