Color Management

[Nico-Duduf]

Let Ramses know the color management of the files and apps

• ColorSpace object and list in Ramses (just a basic object with name and shortname). Shortname could be read from an OCIO config

• Add a few default common colorspaces

• Application: add attribute sceneReferredColorSpace and displayColorSpace

• Application: for each output file association: add colorSpace attribute

• FileType: add default colorSpace

OCIO

To do later

• Ability to set an OCIO config file for the project
• and a different OCIO config for each application

ColorSpace list is built from the available OCIO spaces, using defaults from the config file