Add benchmark support using -b

Days/Day11.cs

@@ -51,9 +51,9 @@ public class Monkey
         // Divide worry level by 3 before test
         if (divideWorry)
         {
-            newValue = newValue / 3;            
+            newValue = newValue / 3;
         }
-        
+
         // Even using this simplification, it's still needed to use longs because
         // they sometime overflow before being simplified in part 2
         newValue = newValue % (2*3*5*7*11*13*17*19);
@@ -77,7 +77,7 @@ public class Day11 : Day
 {
     public override int Number => 11;
     public override string Name => "Monkey in the Middle";
-    public override void RunPart1()
+    public override void RunPart1(bool display = true)
     {
         const int roundsCount = 20;
 
@@ -95,10 +95,13 @@ public class Day11 : Day
 
         var topMonkeys = monkeys.OrderByDescending(m => m.InspectionCount).Take(2).ToList();
 
-        AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+        }
     }
 
-    public override void RunPart2()
+    public override void RunPart2(bool display = true)
     {
         const int roundsCount = 10_000;
 
@@ -116,7 +119,10 @@ public class Day11 : Day
 
         var topMonkeys = monkeys.OrderByDescending(m => m.InspectionCount).Take(2).ToList();
 
-        AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+        }
     }
 
     private static IImmutableList<Monkey> ParseMonkeys()