Shader Pack v2.6

VRC Big fix.
Something on the backend changed and altered a lot of how light color was determined, so I had to hammer together something that doesn't break.

-Shadow Masks work (sorta) again
-Matcaps in baked lighting will properly work
-Lighting in general is a slight shift to the darker
-Emissions redone, should be fine going forward but be aware older editor settings my have you light up like a Christmas tree.