fix: don't try to re-send stickers and activity invites

Myriad/Types/Message.cs

@@ -43,6 +43,7 @@ public record Message
     public ulong Id { get; init; }
     public ulong ChannelId { get; init; }
     public ulong? GuildId { get; init; }
+    public MessageActivity? Activity { get; init; }
     public User Author { get; init; }
     public string? Content { get; init; }
     public string? Timestamp { get; init; }
@@ -54,6 +55,8 @@ public record Message
 
     public Attachment[] Attachments { get; init; }
     public Embed[]? Embeds { get; init; }
+    public Sticker[]? StickerItems { get; init; }
+    public Sticker[]? Stickers { get; init; }
     public Reaction[] Reactions { get; init; }
     public bool Pinned { get; init; }
     public ulong? WebhookId { get; init; }
@@ -69,6 +72,8 @@ public record Message
 
     public record Reference(ulong? GuildId, ulong? ChannelId, ulong? MessageId);
 
+    public record MessageActivity(int Type, string PartyId);
+
     public record Attachment
     {
         public ulong Id { get; init; }

Myriad/Types/Sticker.cs

@@ -0,0 +1,29 @@
+namespace Myriad.Types;
+
+public record Sticker
+{
+    public enum StickerType
+    {
+        STANDARD = 1,
+        GUILD = 2,
+    }
+
+    public enum StickerFormatType
+    {
+        PNG = 1,
+        APNG = 2,
+        LOTTIE = 3,
+    }
+
+    public ulong Id { get; init; }
+    public StickerType Type { get; init; }
+    public ulong? PackId { get; init; }
+    public string Name { get; init; }
+    public string? Description { get; init; }
+    public string Tags { get; init; }
+    public string Asset { get; init; }
+    public bool Available { get; init; }
+    public ulong? GuildId { get; init; }
+    public User? User { get; init; }
+    public int? SortValue { get; init; }
+}