Add private Link Scope for Azure Arc

[psinnathurai]

Add private Link Scope for Azure Arc

Before selecting the "Create pull request" button:

1. Enter a meaningful title above^, using a prefix if necessary and keywords "New" or "Update" indicating the nature of changes.

2. Describe the summary, scope, and intent of this PR:
   Add private Link Scope for Azure Arc

3. Insert links(s) to any related work item(s) or supporting detail:
   ](https://learn.microsoft.com/en-us/azure/templates/microsoft.insights/privatelinkscopes?pivots=deployment-language-bicep)

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