ecos shader for Canvas

changelog:

• update pack format
• reduce bloom
• massively reduce fog, densest at y 0
• change default film grain value from 3 to 2
• apply metal shader to iron door and trap door
• apply glass shader to all stained glass colors
• calculate in vertex: held light, vertex binormal, fog
• fix missing math lib import (affects can-pipe)
• fix item held light by halving the angle radius

experimental changes:

• add light block configurations for colored lights
• make colored lights affect ambient light color

note: colored lights require a special Canvas build

big update:

• add new stylize effects which includes outline with corner highlights, warm boost, and noise
• add antialiasing
• add hand size adjustment (known issue: detached fishing line)
• add more metallic blocks such as anvil, hopper, cauldron, and lightning rod
• add metallic effect to armors. toggleable to mitigate confusion with enchantment glint
• misc. tweaks (redder sunlight on sunset, smoother and more accurate held light color, uniform shading in dimensions without sky, redder hurt effect)

• add shadow quality option
• tweak block light to make redstone torch light more visible
• fix potentially critical pipeline compilation bug

• updated water
• experimental sky bloom
• misc. lighting tweaks (remove fake directional light except on GUI, stronger block light, block light eye adaption, readjust bloom levels, fake reflection on amethyst, etc.)

First release of ecos!