NewClient creates a new gRPC helmgate client.

WithIDToken makes the client use the oauth id token(if it exists) instead of the oauth access token.

WithLogging registers a logging middleware.

WithMetrics registers prometheus metrics.

WithTokenSource uses oauth token add an authorization header to every outbound request.

WithTransportCreds adds transport credentials to the client.

Client is a helmgate gRPC client.

Options holds configuration options.

Opt is a single configuration option.