Refactor the OCIO config to use the updated OpenColorIO 2.x recommended
format, which places spaces like sRGB and Display P3 into a separate section
dedicated to display-referred colorspaces, and puts view transforms in their
own section as well.
View transform are no longer declared as color spaces, they are now rerouted
to cie_xyz_d65_interchange, and then from there go to the display colorspace.
Also remove the dedicated reverse LUT for AgX. Since view transforms are
no longer colorspaces, using them in a `- !<ColorSpaceTransform>` line no
longer works. The original way of re-using the inverse definition with
`- !<ColorSpaceTransform>` no longer works, it gets a bit troublesome. AgX
has never been able to perfectly invert, not even with this inverse LUT, so
might as well remove it.
Ref #144911
Pull Request: https://projects.blender.org/blender/blender/pulls/145519
08c5437c13
