feat(bot): correctly proxy voice messages

Myriad/Rest/BaseRestClient.cs

@@ -150,7 +150,7 @@ public class BaseRestClient: IAsyncDisposable
         if (files != null)
             for (var i = 0; i < files.Length; i++)
             {
-                var (filename, stream, _) = files[i];
+                var (filename, stream, _, _, _) = files[i];
                 mfd.Add(new StreamContent(stream), $"files[{i}]", filename);
             }
 

Myriad/Rest/Types/MultipartFile.cs

@@ -1,3 +1,3 @@
 namespace Myriad.Rest.Types;
 
-public record MultipartFile(string Filename, Stream Data, string? Description);
+public record MultipartFile(string Filename, Stream Data, string? Description, string? Waveform, float? DurationSecs);

Myriad/Rest/Types/Requests/ExecuteWebhookRequest.cs

@@ -11,4 +11,5 @@ public record ExecuteWebhookRequest
     public Sticker[] Stickers { get; init; }
     public Message.Attachment[] Attachments { get; set; }
     public AllowedMentions? AllowedMentions { get; init; }
+    public Message.MessageFlags? Flags { get; set; }
 }