Integrate sync stack workflow for AppConfig

[samvaity]

This PR integrates Sync workflow for AppConfig client SDK.
The Sync clients for appconfig will no longer block on async client APIs but rather call their respective non-blocking synchronous APIs for fulfilling the request.

Follow-up PR to update Paging API's #30031

[azure-sdk]

API change check

APIView has identified API level changes in this PR and created following API reviews.

azure-data-appconfiguration
azure-data-appconfiguration
azure-core-test

[samvaity]

List API's to be updated in a follow-up PR once #30031 is resolved.

[kasobol-msft]

Looks good, how are we doing with test converage?

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[mssfang]

These two suppression can be merged to a single one I believe.

[ghost]

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