Reworked Death Toll skybox and removed the blue horizon line on chap 3.

The parish now has a skybox

a minor tweak for something

changed the passing skybox & cc (nightfall cc by mechanic)
added a skybox for the second half of hard rain, changed the color correction.
yoinked spoon's sunset color correction for dead center, removed skybox.
Added a new skybox for swamp finale.
ate some pasta with ketchup, what else to note here..

Edited out the giant moon on death toll for more rwealissm

Patched a bug where you would see a second moon on no mercy.
Removed the sun sprite so the addon can now work with some lighting effect mods.

Removed addoninfo.txt because it refuses to do it's fucking job

Attempts to fix the addon info txt

Added addon.txt file
edit: piece of dogshit text file works only half the time.

Reworked l4d1 skyboxes and gave some love and polish to l4d2 ones
(except for Parish. Parish is alright as it is, fight me idc)