Added configuration plugin options for default chat data sources (#833)

app/MindWork AI Studio/Settings/DataModel/DataAgentDataSourceSelection.cs

@@ -1,14 +1,23 @@
+using System.Linq.Expressions;
+
 namespace AIStudio.Settings.DataModel;
 
-public sealed class DataAgentDataSourceSelection
+public sealed class DataAgentDataSourceSelection(Expression<Func<Data, DataAgentDataSourceSelection>>? configSelection = null)
 {
+    /// <summary>
+    /// The default constructor for the JSON deserializer.
+    /// </summary>
+    public DataAgentDataSourceSelection() : this(null)
+    {
+    }
+
     /// <summary>
     /// Preselect any data source selection options?
     /// </summary>
-    public bool PreselectAgentOptions { get; set; }
+    public bool PreselectAgentOptions { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectAgentOptions, false);
     
     /// <summary>
     /// Preselect a data source selection provider?
     /// </summary>
-    public string PreselectedAgentProvider { get; set; } = string.Empty;
+    public string PreselectedAgentProvider { get; set; } = ManagedConfiguration.Register(configSelection, n => n.PreselectedAgentProvider, string.Empty);
 }