[PostProcessing] Timothy Lottes CRT

As said on GAF, shader from Mr *awesome* Lottes + some cleanup/warnings in _Post.fx_
Also fixed a few things in _post_asmodean.fx_ (the sampler used ANISOTROPIC which litterally *crashes* the d3d9 debug runtime). Plus it used hardcoded resolution (3840x2160)

EDIT : just saw Asmodean submitted an update to his shader lol. I'm starting to think the hardcoded resolution was there on purpose. In anycase the ANISOTROPIC filter does crash the d3d9 debug runtime. Guess I'll remove my changes to his file and comment on his pull request instead