Adding a CachingKeyResolver which will cache the CMK from Azure Key V…

[jeet1995]

…ault.

Pull Request Template

Description

Please include a summary of the change and which issue is fixed. Include samples if adding new API, and include relevant motivation and context. List any dependencies that are required for this change.

Type of change

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• [] Bug fix (non-breaking change which fixes an issue)
• [] New feature (non-breaking change which adds functionality)
• [] Breaking change (fix or feature that would cause existing functionality to not work as expected)
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[NaluTripician]

Hi @jeet1995 — this PR has been idle for ~66 days. What's the current ETA / status? Flagging as part of an open-PR cleanup pass; if it's no longer being pursued we can close it. No auto-close — just looking for a status update.