[Request] Add unwrap argument to client rpc async if passed with payload

[ernesernesto]

Hi, passing client rpc async with payload would always fail without unwrap argument

var apiRpc = await client.RpcAsync(httpKey, "rpc_test", "{\"val\": \"a\"}");

Can we get client rpc async with unwrap argument so calling rpc like this would work?

Edit: add links for reference issue on nakama forum

Thanks