Add support for ASWF Color Interop Forum recommendation

[doug-walker]

The ASWF Color Interop Forum has developed a recommendation for color spaces that should be supported for texture assets and CG rendering. The draft of the document is here.

The proposed names should be added to the OCIO ACES configs, either as the color space name or as an alias. The suffix "Texture" should be replaced with "Scene-referred".

We may want to revisit the naming of "sRGB Encoded P3-D65 - Texture" and make that an alias.

The color spaces to add are AdobeRGB, Linear AdobeRGB, and CIE-XYZ-D65 Scene-referred.

At the same time, support should be added for any MaterialX 1.39 names which are not already part of the configs. This means adding "adobergb" and "lin_adobergb". We should discuss whether to make "none" an alias of Raw. The "g18_ap1" is deprecated and does not need to be added. The rest of them are already in the configs as aliases.

This applies to both the CG and Studio configs for ACES.

[KelSolaar]

Should be addressed in #129!

[doug-walker]

Confirmed in studio-config-v2.2.0_aces-v1.3_ocio-v2.4.ocio and cg-config-v2.2.0_aces-v1.3_ocio-v2.4.ocio now include these names and aliases as of PR #129.

The ASWF CIF recommendation is not final yet, so will leave this issue open for now in case any tweaks are made to the naming.

[doug-walker]

@KelSolaar , per the discussion at the latest Interop Forum meeting, please change the following user-facing names as follows:

sRGB - Scene-referred --> sRGB Encoded Rec.709 (sRGB)
Gamma 2.2 Rec.709 - Scene-referred --> Gamma 2.2 Encoded Rec.709
Gamma 1.8 Rec.709 - Scene-referred --> Gamma 1.8 Encoded Rec.709
sRGB Encoded AP1 - Scene-referred --> sRGB Encoded AP1
Gamma 2.2 AP1 - Scene-referred --> Gamma 2.2 Encoded AP1
sRGB Encoded P3-D65 - Scene-referred --> sRGB Encoded P3-D65
AdobeRGB - Scene-referred --> Gamma 2.2 Encoded AdobeRGB

[KelSolaar]

List was missing Gamma 2.4 Encoded Rec.709 and this should leave us with CIE XYZ-D65 - Scene-referred only having the Scene-referred suffix.