Suggested and funded by [[ https://blendernpr.org/| BNPR ]], this patch aims to update the long not-updated Freestyle UI
**Why do the UI upgrade:**
- Freestyle UI doesn't match the rest of Blender UI, it was neglected for a long time
- The current UI makes Freestyle workflows tedious and distracting
- Streamline UI with latest workflow
**Highlights:**
* Freestyle options divided into panels
{F10130708}
* Line Set Panel, Line Style selected under, similar to particle settings, sub panels for sub settings
{F10130713}
* Line style breadcrumb, making sure that editing line style setting always on the correct line style
{F10130716}
* Multiple line style panels to be open at the same time, this allows faster complex line style creation
{F10130722}
Workflow video: https://youtu.be/IqbjIq_A800
Doc patch (WIP): https://github.com/bnpr/FreestyleUIUpgrade/blob/main/freestyle-ui-upgrade-docs.diff