Add Apple Log 2 color space

[doug-walker]

Proposed name: "Apple Log 2" Proposed interop ID: ocio:applelog_applewg_scene

In addition, we should add a linear color space for the primaries. Proposed name: "Linear Apple Wide Gamut" Proposed interop ID: ocio:linear_applewg_scene

@carolalynn , please review.

The white paper does not specify what chromatic adaptation to use, so I propose using Bradford as it is the most consistent with ACES.

Here is what they should look like:

  - !<ColorSpace>
    name: Apple Log 2
    aliases: [ocio:applelog_applewg_scene]
    interop_id: ocio:applelog_applewg_scene
    family: Input/Apple
    equalitygroup: ""
    bitdepth: unknown
    isdata: false
    categories: [file-io]
    encoding: log
    allocation: uniform
    to_scene_reference: !<GroupTransform>
      children:
        - !<BuiltinTransform> {style: CURVE - APPLE_LOG_to_LINEAR}
        - !<MatrixTransform> {matrix: [0.694961049318096, 0.241405268785364, 0.06363368189654, 0, 0.0473627464149325, 1.00429592505428, -0.0516586714692158, 0, -0.021989789359883, -0.0289891049714743, 1.05097889433136, 0, 0, 0, 0, 1]}

  - !<ColorSpace>
    name: Linear Apple Wide Gamut
    aliases: [ocio:linear_applewg_scene]
    interop_id: ocio:linear_applewg_scene
    family: Input/Apple
    equalitygroup: ""
    bitdepth: unknown
    isdata: false
    categories: [file-io]
    encoding: scene-linear
    allocation: uniform
    to_scene_reference: !<MatrixTransform> {matrix: [0.694961049318096, 0.241405268785364, 0.06363368189654, 0, 0.0473627464149325, 1.00429592505428, -0.0516586714692158, 0, -0.021989789359883, -0.0289891049714743, 1.05097889433136, 0, 0, 0, 0, 1]}

[doug-walker]

At the 2025-10-13 TSC meeting, the group preferred using applelog_applewg_scene rather than my original proposal of applelog_awg_scene, so I edited the description above accordingly.

[carolalynn]

Yep, this looks good. CAT is indeed Bradford.