Add TransferShopsCommand

src/main/java/com/alttd/playershops/shop/PlayerShop.java

@@ -140,6 +140,7 @@ public class PlayerShop {
     public void setOwner(Player player) {
         ownerUUID = player.getUniqueId();
         ownerName = player.getName();
+        update();
     }
 
     public Inventory getInventory() {