[Bug]: Adding an ExtensionActionScope for ArmProviderAction op template

[allenjzhang]

Describe the bug

FileShare raised an awareness that common ARM internal APIs has a pattern for extension resource provider level action.

/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/{sourceResourceProviderName}/{sourceResourceProviderType}/{sourceResourceName}/providers/Microsoft.FileShares/notify

Proposed adding following extension resource action scope to produce

/{resourceUri}/providers/Microsoft.FileShares/notify

@armVirtualResource
@extensionResource
model ExtensionResourceActionScope {
  @doc("Symbolic name of scope")
  @path
  @visibility(Lifecycle.Read)
  @key
  @segment("extensionresource")
  name: string;
}

Reproduction

Playground

Checklist

• Follow our Code of Conduct
• Check that this issue is about the Azure libraries for typespec. For bug in the typespec language or core libraries file it in the TypeSpec repo
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.