pyocioamf: Add AMF v2.0 and OCIO 2.5+ support

[giardiello]

Summary

This PR enhances pyocioamf with support for AMF v2.0 and OCIO 2.5+ configurations:

• AMF v2.0 support with automatic version detection from namespace URI or version attribute
• OCIO 2.5+ config support using the amf_transform_ids interchange attribute for transform lookup
• New CLI options for flexible conversion control
• Split CTF generation for AMF v2.0 workingLocation marker
• New example file demonstrating v2.0 format

Changes

AMF Version Support

• Auto-detects v1.0 vs v2.0 from namespace URI (urn:ampas:aces:amf:v1.0 / v2.0) or version attribute
• Handles both v1.0 element names (SOPNode/SatNode) and v2.0 names (ASC_SOP/ASC_SAT)

OCIO Config Compatibility

• For OCIO 2.5+ configs: Uses dedicated amf_transform_ids interchange attribute
• For OCIO 2.1-2.4 configs: Falls back to description-based transform ID search
• Dynamic ACES2065-1 colorspace detection via role lookup, common names, and aliases

CLI Enhancements

• --config: Specify a custom OCIO config file (supports OCIO 2.1+)
• --no-idt: Exclude input transform from conversion
• --no-lmt: Exclude look transforms from conversion
• --no-odt: Exclude output transform from conversion
• --split-by-working-location: Generate split CTFs at workingLocation marker

New Files

• example_v2.amf: AMF v2.0 example with ASC_SOP/ASC_SAT elements

Test Plan

• Convert example.amf (v1.0) - backwards compatible
• Convert example_v2.amf (v2.0) - new format support
• Test with OCIO 2.4 config (description-based lookup)
• Test with OCIO 2.5 config (amf_transform_ids lookup)
• Test --no-idt, --no-lmt, --no-odt exclusion options
• Test --split-by-working-location with workingLocation marker

Backwards Compatibility

All existing functionality is preserved. The script will:

• Auto-detect AMF version and use appropriate element parsers
• Auto-detect OCIO config version and use appropriate lookup method
• Default to existing behavior when no CLI options are specified

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: giardiello / name: giardiello (0a29193, 3d9cf38)

[doug-walker]

@giardiello , I noticed you closed this and wanted to get more detail from you.

Apologies for the long delay in getting this reviewed, but I had still planned on including it in the 2.6 release. Just wanted to understand if you no longer want this merged because you feel there are issues with the code, or are planning on making an alternate/improved PR, or don't find this relevant for your work anymore, or are just giving up due to the long delay.

[giardiello]

Hi Doug, I'm in the process of updating this and proposing a C++ module made on top of what the guys at AJA started some time ago. Based on that work, the python script needed a tweak too. So I've closed it while I was doing the cleanup. Opening this again soon.