rework animations

[magicelk235]

currently the animation system is unreliable, make it more dynamic and easy to use

[magicelk235]

changes:
make animations into a queue
animations will now have next animation parameter, by default its None meaning the next animation, if its not None it will force set the nextAnimation and so on until it will reach a "dead end"= next animation is None, if the queue is empty the animation will be the default one

new big feature:
effects, effects are small changes to the animations, so if I want to add a potion that scales the images twice as big ill use an effect, if the character is being damaged and I want it to be tinted red, ill use an effect, so damage tint is not going the be in animation like in previous versions
effects are going to be stored in a list or a set not sure yet,

weights are getting removed,
placeholder animation hold the same idea thanks to animations being in a queue theres not need for weights, now animations with infinite time, will be replaced when theres an animation to be replaced with.