Cannot implicitly convert type 'ulong' to 'long' when Deleting a message

[aliasadidev]

Observed behavior

There are lots of issues regarding to the data types.

var ack = await JSContext.PublishAsync("SUBJECT", null);
await steam.DeleteMessageAsync(new StreamMsgDeleteRequest { Seq = ack.Seq }); // getting an error here because the datatypes are not same

Expected behavior

Datatypes should be defined correctly. (i have checked that with the server datatypes)

public record StreamMsgDeleteRequest {
  public ulong Seq { get; set; }
}

Server and client version

nats-server version: v2.10.10

Host environment

No response

Steps to reproduce

No response

[aliasadidev]

done it in #397