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This is the azcore side of #14931. I'm targeting the beta branch because the end-to-end scenario requires an azidentity beta. ARM is the only SDK service that supports CAE (continuous access evaluation) today. Briefly, it works like this: ARM evaluates security policies for the access token attached to each request. When a token doesn't satisfy policy, ARM responds 401 with an authentication challenge. The client must retry the request with a new access token having the claims specified by the challenge. So, this PR adds challenge handling to ARM's auth policy, and a
TokenRequestOptions.Claimsfield that enables the policy to request claims when callingGetToken().