C++ APIView additional checks

I think that's a reasonable request.

Another one on similar lines is any struct/class whose name ends with `ClientOptions` being in the "Models" namespace (types in the Models namespace are supposed to be types transferred to or from the service).

_Originally posted by @LarryOsterman in https://github.com/Azure/azure-sdk-for-cpp/pull/5861#discussion_r1701018085_