Add Apple Log 2 color space

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:
```
- !
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: !
children:
- ! {style: CURVE - APPLE_LOG_to_LINEAR}
- ! {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]}

- !
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: ! {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]}
```

The issue does not name a target file or test. Locate the repository's existing color-space definitions and compare nearby entries with the two proposed Apple entries, including their IDs, transforms, and Bradford adaptation. Done means Apple Log 2 and Linear Apple Wide Gamut are represented with the specified metadata and transforms.

Written by the indexing model from the issue text.