Add Directory.Build.props. (#2120)

* Add Directory.Build.props.

* Adjust Analysis related properties and add conditional enablement for ContinuousIntegrationBuild.

* Adopt new changes in master

---------

Co-authored-by: christian <6939810+chkr1011@users.noreply.github.com>

Source/MQTTnet.AspTestApp/Pages/Index.cshtml.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Mvc.RazorPages;
 
 namespace MQTTnet.AspTestApp.Pages;
 
-public class IndexModel : PageModel
+public partial class IndexModel : PageModel
 {
     readonly ILogger<IndexModel> _logger;
 
@@ -17,6 +17,9 @@ public class IndexModel : PageModel
 
     public void OnGet()
     {
-        _logger.LogDebug("OnGet");
+        LogOnGet();
     }
+
+    [LoggerMessage(Level = LogLevel.Information, Message = "OnGet")]
+    private partial void LogOnGet();
 }