Split out loggingStart service to its own file and namespace

Installers/LoggingStartService.cs

@@ -0,0 +1,30 @@
+using ILogger = Serilog.ILogger;
+
+namespace Diary.Installers
+{
+	public class LoggingStartService : IHostedService
+	{
+		private readonly ILogger _log;
+		private readonly string _serviceName;
+
+		public ILogger Logger { get; }
+
+		public LoggingStartService(ILogger logger, string serviceName)
+		{
+			_log = logger.ForContext<LoggingStartService>();
+			_serviceName = serviceName ?? "API";
+		}
+
+		public Task StartAsync(CancellationToken cancellationToken)
+		{
+			_log.Information("{ServiceName} service started", _serviceName);
+			return Task.CompletedTask;
+		}
+
+		public Task StopAsync(CancellationToken cancellationToken)
+		{
+			_log.Information("{ServiceName} service stopped", _serviceName);
+			return Task.CompletedTask;
+		}
+	}
+}