Expose profile_file in render settings

[TomMinor]

Describe the feature you'd like
It would be handy to be able to set the profile file from within Solaris

Describe the solution you'd like
ASTR(profile_file) already exists, it just needs exposing like ASTR2(profile_file, "profile:file") so it shows up in the render settings

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[autodesk-oss-arnold-bot]

Issue synced internally to ARNOLD-13708