Added allowed LLM provider setting (data protection)

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

@@ -77,6 +77,11 @@ public sealed class DataERI
     /// </summary>
     public OperatingSystem PreselectedOperatingSystem { get; set; } = OperatingSystem.NONE;
 
+    /// <summary>
+    /// Do you want to preselect which LLM providers are allowed?
+    /// </summary>
+    public AllowedLLMProviders PreselectedAllowedLLMProviders { get; set; } = AllowedLLMProviders.NONE;
+
     /// <summary>
     /// Do you want to preselect a retrieval description?
     /// </summary>