Add project files.

Inspectron.Epson/PrintServer/PrintLoop.cs

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+using Inspectron.Epson.PrintServer.PrintServices;
+using Microsoft.Extensions.Logging;
+
+namespace Inspectron.Epson.PrintServer;
+
+public class PrintLoop
+{
+    private readonly global::PrintServer _printServer;
+    private readonly IPrintService _printService;
+    private readonly IPrintJobSource _jobSource;
+    private readonly IAssignedPrinterRepository _assignedPrinterRepository;
+    private readonly ILogger _logger;
+    private CancellationTokenSource? _cancellationSource;
+    private CancellationToken _cancellationToken;
+
+    public PrintLoop(global::PrintServer printServer,IPrintService printService, IPrintJobSource jobSource, IAssignedPrinterRepository assignedPrinterRepository, ILogger logger)
+    {
+        _printServer = printServer;
+        _printService = printService;
+        _jobSource = jobSource;
+        _assignedPrinterRepository = assignedPrinterRepository;
+        _logger = logger;
+    }
+
+    public Task StartAsync()
+    {
+        _cancellationSource = new CancellationTokenSource();
+        _cancellationToken = _cancellationSource.Token;
+        _= Task.Run(Loop);
+        return Task.CompletedTask;
+    }
+    public async Task Loop()
+    {
+        while (!_cancellationSource!.Token.IsCancellationRequested)
+        {
+            var job = await _jobSource.GetNextJobAsync(_cancellationToken);
+            var assigned = _assignedPrinterRepository.GetAssignedPrinter(job.AreaId);
+            if (assigned == null)
+            {
+                _logger.LogWarning("Received print job for unassigned area {AreaId}, skipping", job.AreaId);
+                continue;
+            }
+
+            _printServer.SubmitJob(assigned, job);
+        }
+    }
+
+    public Task StopAsync()
+    {
+        _cancellationSource!.Cancel();
+        return Task.CompletedTask;
+    }
+}