Add app version logging on startup (#31)

code/Executable/Program.cs

@@ -1,3 +1,4 @@
+using System.Reflection;
 using Executable.DependencyInjection;
 
 var builder = Host.CreateApplicationBuilder(args);
@@ -7,4 +8,14 @@ builder.Logging.AddLogging(builder.Configuration);
 
 var host = builder.Build();
 
+var logger = host.Services.GetRequiredService<ILogger<Program>>();
+
+var version = Assembly.GetExecutingAssembly().GetName().Version;
+
+logger.LogInformation(
+    version is null
+        ? "cleanuperr version not detected"
+        : $"cleanuperr v{version.Major}.{version.Minor}.{version.Build}"
+);
+
 host.Run();