'RpcClaimsIdentity' was added to 'RpcHttp' in the Azure Function protocol and we need to translate it properly

[daxian-dbw]

RpcClaimsIdentity was added to RpcHttp in the Azure Function protocol to support the claim-based authentication in Azure Functions. We need to translate it properly to ClaimsPrincipal or ClaimsIdentity.

[pragnagopa]

cc: @kashimiz - as FYI

[kashimiz]

It may be useful to reference this PR from the Node worker, specifically the Converters.fromRpc(), to see how it's done there.

@ConnorMcMahon and I would like to keep the language worker representations as close to the .NET version as possible. PowerShell may actually be able to use the ClaimsPrincipal and ClaimsIdentity types.