Added NoStackTrace to ExceptionFormats (#1489)

src/Spectre.Console/Widgets/Exceptions/ExceptionFormat.cs

@@ -35,4 +35,9 @@ public enum ExceptionFormats
     /// Shortens everything that can be shortened.
     /// </summary>
     ShortenEverything = ShortenMethods | ShortenTypes | ShortenPaths,
+
+    /// <summary>
+    /// Whether or not to show the exception stack trace.
+    /// </summary>
+    NoStackTrace = 16,
 }

src/Spectre.Console/Widgets/Exceptions/ExceptionFormatter.cs

@@ -50,6 +50,11 @@ internal static class ExceptionFormatter
         }
 
         // Stack frames
+        if ((settings.Format & ExceptionFormats.NoStackTrace) != 0)
+        {
+            return grid;
+        }
+
         var stackTrace = new StackTrace(ex, fNeedFileInfo: true);
         var frames = stackTrace
             .GetFrames()