remove deprecated Catalyst Script Generator GUI and other dead code paths
The Export Inspector isn't new anymore, time to remove its predecessor and clean up some code.
- remove Temporal Script Plugin
- remove Catalyst Script Generator Wizard and Catalyst Writers
- transition tests that use the old GUI
- update the documentation to describe the new GUI instead of the old plugin
remove Catalyst Writers XML definitions, while keeping backward compatibility
remove original INVERTIBLE_LUT value rendering approach
- remove old python code paths in cpstate.py, cinema and others, streamline what remains. For example outward facing pose camera.