feat: Add Print Service Tray application with configuration and queue management

- Implemented PrintQueueService with job counting and snapshot retrieval.
- Created Form1 as the main entry point for the tray application.
- Developed ConfigurationForm for managing printer configurations and document types.
- Added models for printer configuration, queue status requests, and responses.
- Established ConfigurationService for loading and saving printer configurations.
- Introduced ServiceClient for IPC communication with the print service.
- Built TrayApplicationContext for managing the system tray icon and status updates.
- Added TODO.md for tracking remaining work and future enhancements.

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.
+}

PrintServiceTray/Models/QueueStatusRequest.cs

@@ -0,0 +1,6 @@
+namespace PrintServiceTray.Models;
+
+public class QueueStatusRequest
+{
+    public string Command { get; set; } = "GetQueueStatus";
+}

PrintServiceTray/Models/QueueStatusResponse.cs

@@ -0,0 +1,19 @@
+namespace PrintServiceTray.Models;
+
+public class QueueStatusResponse
+{
+    public bool Success { get; set; }
+    public string? Message { get; set; }
+    public List<JobStatus> Jobs { get; set; } = new();
+}
+
+public class JobStatus
+{
+    public string Id { get; set; } = string.Empty;
+    public string FileName { get; set; } = string.Empty;
+    public string DocumentType { get; set; } = string.Empty;
+    public string Status { get; set; } = string.Empty;
+    public string? PrinterName { get; set; }
+    public int? CurrentPage { get; set; }
+    public int? TotalPages { get; set; }
+}