feat(nextRun): рассчет поля NextRun по расписанию

PARR.NextRunWorker/Worker.cs

@@ -0,0 +1,19 @@
+using PARR.NextRun;
+
+namespace PARR.NextRunWorker
+{
+    public class Worker : BackgroundService
+    {
+        private readonly INextRunManager nextRunManager;
+
+        public Worker(INextRunManager nextRunManager)
+        {
+            this.nextRunManager = nextRunManager;
+        }
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+            await nextRunManager.StartAsync();
+        }
+    }
+}