Implemented Pir's Whim

Also added an object for choosing friend or foe

Mage/src/main/java/mage/choices/ChooseFriendsAndFoes.java

@@ -0,0 +1,51 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package mage.choices;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import mage.abilities.Ability;
+import mage.constants.Outcome;
+import mage.game.Game;
+import mage.players.Player;
+
+/**
+ *
+ * @author TheElk801
+ */
+public class ChooseFriendsAndFoes {
+
+    private List<Player> friends = new ArrayList<>();
+    private List<Player> foes = new ArrayList<>();
+
+    public boolean chooseFriendOrFoe(Player playerChoosing, Ability source, Game game) {
+        if (playerChoosing == null) {
+            return false;
+        }
+        friends.clear();
+        foes.clear();
+        for (UUID playerId : game.getState().getPlayersInRange(playerChoosing.getId(), game)) {
+            Player player = game.getPlayer(playerId);
+            if (player != null) {
+                if (playerChoosing.chooseUse(Outcome.Vote, "Is " + player.getName() + " friend or foe?", null, "Friend", "Foe", source, game)) {
+                    friends.add(player);
+                } else {
+                    foes.add(player);
+                }
+            }
+        }
+        return true;
+    }
+
+    public List<Player> getFriends() {
+        return friends;
+    }
+
+    public List<Player> getFoes() {
+        return foes;
+    }
+}