PLD improvements

[Allegor]

Requiescat: Weird request but I kind of wish that instead of being a buff with a duration, it instead gave us 5 stacks with 20-30 second duration that we can spend how we see fit across a longer period of time.

I like this change. Personally I was never a fan of the Requiescat phase, it just feels...clunky, even if thematically fitting - just stand there casting Holy Spirit to the boss' face, and only 10 levels later does it even become instant while Requiescat is active. That said, Holy Spirit would need to be turned into an ability to not waste gcd using it, and I'm not good at theorycrafting to guess how would that affect the job's overall performance.