feat(OCM): Implement ISignedCloudFederationProvider for deck

[mickenordin]

• Resolves: Need arises from this PR: http-sig: Update http message signatures for OCM after spec review server#62543
• Target version: main

Summary

When an app recieves OCM notifications, core needs to be able to resolve the remote server that sent the notification so that it can verify the signature of the notification.

This patch implements the ISignedCloudFederationProvider interface for the deck app, so that this can happen.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
  I did not include any extra test, since the current test suite caught this error.
• Documentation (manuals or wiki) has been updated or is not required
  See docs(OCM): ISignedCloudFederationProvider needed for OCM notification documentation#15444

[github-actions]

🐢 Performance warning.
It looks like the query count of the integration tests increased with this PR.
Database query count is now 200191 was 198420 (+0.89%)
Please check your code again. If you added a new test this can be expected and the base value in tests/integration/base-query-count.txt can be increased.

[github-actions]

🐢 Performance warning.
It looks like the query count of the integration tests increased with this PR.
Database query count is now 200172 was 198420 (+0.88%)
Please check your code again. If you added a new test this can be expected and the base value in tests/integration/base-query-count.txt can be increased.

[github-actions]

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