Publisher Facade

All Submissions:

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• [YES] I have added an explanation of what changes in this merge do and why we should include it?
• [NO] Does the MR contain pipeline/ helm chart related changes?
• [NA] I have updated the documentation accordingly.
• [YES] I have added tests to cover my changes.
• [YES] All new and existing tests passed.
• [YES] My code follows the code style of this project.
• [NA] I ran lint checks locally prior to submission.

What is the issue or story related to the change?

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This MR introduces a publisher facade which can be used across services in order to publish messages to message brokers(Service Bus/ Event Grid).It will help to manage and update at a single source instead of each service doing it individually.The pub sub configuration can be used to configure publishing for Event grid and Service bus.

Test coverage:

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• All existing and new TC's passed.

Does this introduce a breaking change?

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• [NO]