Add benchmark support using -b

Days/Day3.cs

@@ -7,7 +7,7 @@ public class Day3 : Day
     public override int Number => 3;
     public override string Name => "Rucksack Reorganization";
 
-    public override void RunPart1()
+    public override void RunPart1(bool display = true)
     {
         long sum = 0;
 
@@ -22,10 +22,13 @@ public class Day3 : Day
             sum += CharToPriority(common);
         }
 
-        AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+        }
     }
 
-    public override void RunPart2()
+    public override void RunPart2(bool display = true)
     {
         long sum = 0;
 
@@ -40,10 +43,13 @@ public class Day3 : Day
             sum += CharToPriority(common);
         }
 
-        AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+        }
     }
 
-    private int CharToPriority(char c)
+    private static int CharToPriority(char c)
     {
         if (char.IsLower(c))
         {