feature: Add user public flags (#1722)

src/Discord.Net.WebSocket/Entities/Users/SocketUser.cs

@@ -26,6 +26,8 @@ namespace Discord.WebSocket
         public abstract string AvatarId { get; internal set; }
         /// <inheritdoc />
         public abstract bool IsWebhook { get; }
+        /// <inheritdoc />
+        public UserProperties? PublicFlags { get; private set; }
         internal abstract SocketGlobalUser GlobalUser { get; }
         internal abstract SocketPresence Presence { get; set; }
 
@@ -83,6 +85,11 @@ namespace Discord.WebSocket
                 Username = model.Username.Value;
                 hasChanges = true;
             }
+            if (model.PublicFlags.IsSpecified && model.PublicFlags.Value != PublicFlags)
+            {
+                PublicFlags = model.PublicFlags.Value;
+                hasChanges = true;
+            }
             return hasChanges;
         }