Provide a method for the player to swap their entire hand

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An option for "Swap out your entire hand." is added to the player's options.

private static string GetChoice()

       {
           string Choice;
           Console.WriteLine();
           Console.WriteLine("Either:");
           Console.WriteLine("     enter the word you would like to play OR");
           Console.WriteLine("     press 1 to display the letter values OR");
           Console.WriteLine("     press 4 to view the tile queue OR");
           Console.WriteLine("     press 7 to view your tiles again OR");
           Console.WriteLine("     press 0 to fill hand and stop the game.");
           Console.WriteLine("     press 2 to swap out your entire hand.");
           Console.Write("> ");
           Choice = Console.ReadLine();
           Console.WriteLine();
           Choice = Choice.ToUpper();
           return Choice;
       }

The following code is added to the choices in HaveTurn:

else if (Choice == "2")

               {
                   //method to swap entire hand
                   int handsize = PlayerTiles.Length;
                   PlayerTiles = "";
                   PlayerTiles = GetStartingHand(TileQueue, handsize);
                   DisplayTilesInHand(PlayerTiles);
               }

The first line records the size of the player's hand. The second empties their hand, and the third calls GetStartingHand() to give them a new hand the same size as their old one. Then the player is shown their new hand.