Add Transcoding Options During Export in AYON for Hiero

In standard Hiero functionality, when exporting shots, there's not only the ability to create folder hierarchies and organize shots, but also to transcode frames into the desired format and colorspace:

Currently, when exporting via AYON in Hiero — for example, working with .mxf files — we need to manually transcode the shots outside of AYON before publishing. AYON then copies these intermediate files into the correct structure, effectively duplicating the data.

This creates issues, especially at scale. For example, exporting a film with 100+ shots to .exr results in around 10TB of unnecessary duplicated data — aside from the added manual steps and general inconvenience.

It would be great to support format and colorspace transcoding directly during publish through AYON, so we can eliminate this intermediate step and avoid redundant storage usage.