Nuke: updated colorspace settings

[jakubjezek001]

Changelog Description

Updating nuke colorspace settings into more convenient way with usage of ocio config roles rather then particular colorspace names. This way we should not have troubles to switch between linear Rec709 or ACES configs without any additional settings changes.

Testing notes:

1. Create new project with some nuke task and keep colormanagement in global to be disabled
2. Open nuke in the project task and see all is working as expected - no colorspace issues.
3. Go to global colorspace management switch and enable it.
4. Open Nuke again and check if there is no colormanagement issue.

[ynbot]

Task linked: OP-7197 nuke: default colorspace settings

[moonyuet]

Without global ocio enabled and local ocio enabled

With global ocio enabled

With nuke ocio enabled

When opening the files again, the read nodes no longer error out

[rontown]

Looks as though you are still missing the custom ocio config selection. I made a PR for this a couple of days ago. Might be worth adding that to this PR?

#5900