create PlayerManager static class

src/engine/powers/poweractions/RecallPowerAction.java

@@ -12,6 +12,7 @@ package engine.powers.poweractions;
 import engine.Enum.GameObjectType;
 import engine.InterestManagement.WorldGrid;
 import engine.gameManager.MovementManager;
+import engine.gameManager.PlayerManager;
 import engine.math.Vector3fImmutable;
 import engine.net.Dispatch;
 import engine.net.DispatchMessage;
@@ -45,7 +46,7 @@ public class RecallPowerAction extends AbstractPowerAction {
 
             PlayerCharacter pc = (PlayerCharacter) awo;
 
-            if (pc.hasBoon())
+            if (PlayerManager.hasBoon(pc))
                 return;
 
             ClientConnection cc = pc.getClientConnection();