(ifcbrk) fix: Add AllowedMentions to webhooks (#1602)

src/Discord.Net.Rest/API/Rest/CreateWebhookMessageParams.cs

@@ -1,4 +1,4 @@
-#pragma warning disable CS1591
+#pragma warning disable CS1591
 using Newtonsoft.Json;
 
 namespace Discord.API.Rest
@@ -19,6 +19,8 @@ namespace Discord.API.Rest
         public Optional<string> Username { get; set; }
         [JsonProperty("avatar_url")]
         public Optional<string> AvatarUrl { get; set; }
+        [JsonProperty("allowed_mentions")]
+        public Optional<AllowedMentions> AllowedMentions { get; set; }
 
         public CreateWebhookMessageParams(string content)
         {

src/Discord.Net.Rest/API/Rest/UploadWebhookFileParams.cs

@@ -21,6 +21,7 @@ namespace Discord.API.Rest
         public Optional<string> Username { get; set; }
         public Optional<string> AvatarUrl { get; set; }
         public Optional<Embed[]> Embeds { get; set; }
+        public Optional<AllowedMentions> AllowedMentions { get; set; }
 
         public bool IsSpoiler { get; set; } = false;
 
@@ -51,6 +52,8 @@ namespace Discord.API.Rest
                 payload["avatar_url"] = AvatarUrl.Value;
             if (Embeds.IsSpecified)
                 payload["embeds"] = Embeds.Value;
+            if (AllowedMentions.IsSpecified)
+                payload["allowed_mentions"] = AllowedMentions.Value;
 
             var json = new StringBuilder();
             using (var text = new StringWriter(json))