Cast bar with effects [Zashoo]

wotlk port: https://wago.io/LyiLCCJ6X

*Updated, all classes*

*Updated, cast bar no longer changes color depending on the spell. But now has animation instead.*

Wanted my own custom cast bar that improves on the default one. So I made one and added stuff to it over time. Now every class and some specs have theme fitting cast bars (i.e frost mage is frosty, fire mage is fiery)

I play mostly with default UI so I added borders to the cast bar to match the default one, but made it bigger so that it's easier to see.

A neat feature I added is that the border turns red when your casts are uninterruptible, I found it nice for pvp.