[CGMZ] Pixi Filters - Version Alpha R4

Hi all, today this plugin was updated to version AlphaR4!
This version focuses on adding some more filters, bringing the total amount of filters supported by this plugin to 18. New to this version are:
Alpha filter - Control the alpha of the target from fully transparent to fully opaque.
Bloom filter - A simpler but with less control version of the Advanced Bloom filter. It applies a Gaussian blur to the target.
Color Replace filter - A filter that takes an input color (RGB) and replaces that color with a new color (RGB). Provide an epsilon value for how lenient / strict color detection is.
- Added Alpha filter
- Added Bloom filter
- Added Color Replace filter