Convert Trafag exporter to Blazor Server app with UI and scheduler

TrafagSalesExporter/Models/HanaServer.cs

@@ -0,0 +1,22 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace TrafagSalesExporter.Models;
+
+public class HanaServer
+{
+    public int Id { get; set; }
+
+    [Required]
+    public string Name { get; set; } = string.Empty;
+
+    [Required]
+    public string Host { get; set; } = string.Empty;
+
+    public int Port { get; set; }
+
+    public string Username { get; set; } = string.Empty;
+
+    public string EncryptedPassword { get; set; } = string.Empty;
+
+    public List<Site> Sites { get; set; } = [];
+}