RpcAuthorizedDeviceClient
Helper class to create an RPC connection to a server that authenticates the app that makes a connection.
This class is intended for device-to-server RPC and it uses authentication based on org.multipaz.device.DeviceAttestation and org.multipaz.device.DeviceAssertion.
Once a connection is created, dispatcher and notifier can be used to create client RPC stubs. rpcClientId uniquely identifies this app instance to an RPC server.