New Hack - NoVignette

[IUDevman]

Description

This PR adds a new hack, NoVignette. This removes the dark vignette shading that is applied to the edges of the player screen. This is also used to shade the player screen red when past the world border.

Testing

I've tested this hack in game. The vignette effect is most noticeable when you are using fullbright, the time is night, or if you are in the nether. I've attached a few side-by-side comparison images.