Support domain-specific LMTs for ACES

[doug-walker]

To accompany the current project within ACES to develop an LMT to tailor the ACES Output Transform tone-scale to be more suitable for use in CG content creation apps, there should be guidance for how to leverage transforms like this in OCIO. For example, guidelines for how to name the views that have a given LMT embedded. Should we explore ways to more easily use looks without adding them to views?