Add all websocket messages to generated openapi spec (#9682)

* Add all websocket messages to generated openapi spec

* Use oneOf

* JsonIgnore ServerId

* Oops

* Add discriminators

* Add WebSocketMessage container for Inbound and Outbound messages

MediaBrowser.Controller/Net/WebSocketMessages/Outbound/UserDataChangedMessage.cs

@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using MediaBrowser.Model.Session;
+
+namespace MediaBrowser.Controller.Net.WebSocketMessages.Outbound;
+
+/// <summary>
+/// User data changed message.
+/// </summary>
+public class UserDataChangedMessage : WebSocketMessage<UserDataChangeInfo>, IOutboundWebSocketMessage
+{
+    /// <summary>
+    /// Initializes a new instance of the <see cref="UserDataChangedMessage"/> class.
+    /// </summary>
+    /// <param name="data">The data change info.</param>
+    public UserDataChangedMessage(UserDataChangeInfo data)
+        : base(data)
+    {
+    }
+
+    /// <inheritdoc />
+    [DefaultValue(SessionMessageType.UserDataChanged)]
+    public override SessionMessageType MessageType => SessionMessageType.UserDataChanged;
+}