Add net8 global exception handler

ProjectTemplates/ShinyAspNet/GlobalExceptionHandler.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore.Diagnostics;
+
+namespace ShinyAspNet;
+
+
+public class GlobalExceptionHandler : IExceptionHandler
+{
+    readonly ILogger logger;
+
+	public GlobalExceptionHandler(ILogger<GlobalExceptionHandler> logger)
+	{
+        this.logger = logger;
+	}
+
+    public ValueTask<bool> TryHandleAsync(HttpContext httpContext, Exception exception, CancellationToken cancellationToken)
+    {
+        this.logger.LogError(exception, "Error processing request");
+        return ValueTask.FromResult(false);
+    }
+}

ProjectTemplates/ShinyAspNet/Program.cs

@@ -38,6 +38,8 @@
         };
     });
 
+builder.Services.AddExceptionHandler<GlobalExceptionHandler>();
+
 //#if (google)
 builder.Services.AddAuthentication().AddGoogle(options =>
 {