Added tray icon support

PrintServiceTray/Models/PrinterConfig.cs

@@ -0,0 +1,29 @@
+namespace PrintServiceTray.Models;
+
+/// <summary>
+/// Configuration for all document types
+/// </summary>
+public class PrinterConfiguration
+{
+    public Dictionary<string, DocumentTypeConfig> DocumentTypes { get; set; } = new();
+}
+
+/// <summary>
+/// Configuration for a single document type
+/// </summary>
+public class DocumentTypeConfig
+{
+    public string Name { get; set; } = string.Empty;
+    public List<PageConfig> Pages { get; set; } = new();
+}
+
+/// <summary>
+/// Configuration for a single page
+/// </summary>
+public class PageConfig
+{
+    public int PageNumber { get; set; }
+    public string PrinterName { get; set; } = string.Empty;
+    public int TrayNumber { get; set; }
+    public string? TrayLabel { get; set; } // Optional: "Pink Paper", "Green Paper", etc.
+}