Re-add Megalania tail attack

Currently megalania is kind of underpowered right now it has a weak fast attack and has terrible stamina and honestly the removal of it's tail attack made it easier to kill by letting other dinos with better agility and stam easily get free attacks by getting behind it, bringing back it's tail attack would help it stack more damage in its fights not only that modern day monitor lizards tails are their best weapons so it makes no sense to remove it