Added the retrieval process section for ERI data sources (#318)

app/MindWork AI Studio/Settings/IERIDataSource.cs

@@ -29,4 +29,9 @@ public interface IERIDataSource : IExternalDataSource
     /// The ERI specification to use.
     /// </summary>
     public ERIVersion Version { get; init; }
+    
+    /// <summary>
+    /// The ID of the selected retrieval process.
+    /// </summary>
+    public string SelectedRetrievalId { get; init; }
 }